Ecchymosis
/ˌɛkɪˈmoʊsɪs/
A discoloration of the skin resulting from bleeding underneath, typically caused by bruising.
Ecchymosis
/ˌɛkɪˈmoʊsɪs/
A discoloration of the skin resulting from bleeding underneath, typically caused by bruising.
Eccrine
/ˈɛkrɪn/
Relating to the most common type of sweat gland, which produces a clear, odorless substance directly onto the skin surface.
Echocardiogram
/ˌɛkoʊˈkɑːrdiəˌɡræm/
A test of the action of the heart using ultrasound waves to produce a visual display.
Echolalia
/ˌɛkoʊˈleɪliə/
Meaningless repetition of another person's spoken words as a symptom of psychiatric disorder.
Eclampsia
/ɪˈklæmpsiə/
A condition in which one or more convulsions occur in a pregnant woman suffering from high blood pressure (preeclampsia).
Ectoderm
/ˈɛktəˌdɜːrm/
The outermost layer of cells or tissue of an embryo in early development, which gives rise to the skin and nervous system.
Ectopia
/ɛkˈtoʊpiə/
A displacement or malposition of an organ or other body part of the body.
Ectopic Pregnancy
/ɛkˈtɒpɪk ˈprɛɡnənsi/
A pregnancy in which the fetus develops outside the uterus, typically in a Fallopian tube.
Ectropion
/ɛkˈtroʊpiɒn/
A condition, typically a consequence of advanced age, in which the eyelid is turned outward away from the eyeball.
Eczema
/ˈɛksɪmə/
A medical condition in which patches of skin become rough and inflamed, with blisters that cause itching and bleeding.
Edema
/ɪˈdiːmə/
A condition characterized by an excess of watery fluid collecting in the cavities or tissues of the body.
Effacement
/ɪˈfeɪsmənt/
The process by which the cervix prepares for delivery by thinning out and shortening.
Efferent
/ˈɛfərənt/
Conducted or conducting outward or away from something (for example, a nerve carrying impulses from the brain to the muscles).
Effusion
/ɪˈfjuːʒən/
An instance of giving off something such as a liquid or gas; in medicine, the escape of fluid into a body cavity.
Effusion
/ɪˈfjuːʒən/
An instance of giving off something such as a liquid, light, or smell; in medicine, the escape of fluid into a body cavity.
Ego
/ˈiːɡoʊ/
In psychoanalysis, the part of the mind that mediates between the conscious and the unconscious and is responsible for reality testing.
Ejaculation
/ɪˌdʒækjʊˈleɪʃən/
The action of ejecting semen from the body.
Elastin
/ɪˈlæstɪn/
A protein forming the main constituent of elastic connective tissue, found especially in the dermis of the skin and the walls of large blood vessels.
Electrocardiogram
/ɪˌlɛktroʊˈkɑːrdiəˌɡræm/
A record or display of a person's heartbeat produced by electrocardiography (ECG/EKG).
Electroencephalogram
/ɪˌlɛktroʊɛnˈsɛfələˌɡræm/
A test or record of brain activity produced by electroencephalography (EEG).
Electrolysis
/ɪˌlɛkˈtrɒlɪsɪs/
The destruction of tumors, hair roots, or other abnormal tissue by an electric current.
Electrolyte
/ɪˈlɛktrəˌlaɪt/
A liquid or gel that contains ions and can be decomposed by electrolysis, e.g., sodium, potassium, and chloride in the blood.
Electromyography
/ɪˌlɛktroʊmaɪˈɒɡrəfi/
The recording of the electrical activity of muscle tissue, or its representation as a visual display or audible signal (EMG).
Elephantiasis
/ˌɛlɪfənˈtaɪəsɪs/
A condition in which a limb or other part of the body becomes grossly enlarged due to obstruction of the lymphatic vessels.
Elimination
/ɪˌlɪmɪˈneɪʃən/
The act of discharging or excreting waste products from the body.
Emaciation
/ɪˌmeɪsiˈeɪʃən/
The state of being abnormally thin or weak, usually caused by lack of food or a wasting disease.
Embolectomy
/ˌɛmbəˈlɛktəmi/
The surgical removal of an embolus (blood clot) from a blood vessel.
Embolism
/ˈɛmbəˌlɪzəm/
Obstruction of an artery, typically by a clot of blood or an air bubble.
Embolus
/ˈɛmbələs/
A blood clot, air bubble, piece of fatty deposit, or other object which has been carried in the bloodstream to lodge in a vessel.
Embryo
/ˈɛmbrioʊ/
An unborn or unhatched offspring in the process of development, in humans up to the eighth week after fertilization.
Embryology
/ˌɛmbriˈɒlədʒi/
The branch of biology and medicine concerned with the study of embryos and their development.
Emesis
/ˈɛməsɪs/
The action or process of vomiting.
Emetic
/ɪˈmɛtɪk/
A substance that causes vomiting.
Emmetropia
/ˌɛmɪˈtroʊpiə/
The normal refractive condition of the eye in which with accommodation relaxed parallel rays of light are focused on the retina.
Emollient
/ɪˈmɒliənt/
A preparation that softens and soothes the skin.
Emphysema
/ˌɛmfɪˈsiːmə/
A condition in which the air sacs of the lungs are damaged and enlarged, causing breathlessness.
Empiric
/ɛmˈpɪrɪk/
Based on observation or experience rather than theory or pure logic; often used to describe starting treatment before a definitive diagnosis is made.
Empyema
/ˌɛmpaɪˈiːmə/
A collection of pus in a body cavity, most commonly in the pleural space between the lungs and the inner chest wall.
Enamel
/ɪˈnæməl/
The hard, calcified substance that covers the crown of a tooth.
Encephalitis
/ɛnˌsɛfəˈlaɪtɪs/
Inflammation of the brain, often caused by an infection or an allergic reaction.
Encephalon
/ɛnˈsɛfəlɒn/
The technical term for the brain.
Encephalopathy
/ɛnˌsɛfəˈlɒpəθi/
Any disease or condition that alters brain function or structure.
End-diastolic volume
/ɛnd ˌdaɪəˈstɒlɪk ˈvɒljuːm/
The volume of blood in a ventricle at the end of filling (diastole), just before contraction (systole).
Endemic
/ɛnˈdɛmɪk/
A disease or condition regularly found among particular people or in a certain area.
Endoangiitis
/ˌɛndoʊˌændʒiˈaɪtɪs/
Inflammation of the inner lining of a blood vessel.
Endocarditis
/ˌɛndoʊkɑːrˈdaɪtɪs/
Inflammation of the endocardium (the inner lining of the heart), usually involving the heart valves.
Endocardium
/ˌɛndoʊˈkɑːrdiəm/
The thin, smooth membrane which lines the inside of the chambers of the heart.
Endocervix
/ˌɛndoʊˈsɜːrvɪks/
The mucous membrane lining the canal of the cervix of the uterus.
Endocrine
/ˈɛndəkrɪn/
Relating to glands which secrete hormones or other products directly into the blood.
Endocytosis
/ˌɛndoʊsaɪˈtoʊsɪs/
The cellular process in which substances are brought into the cell by engulfing them in a vacuole.
Endogenous
/ɛnˈdɒdʒənəs/
Having an internal cause or origin; produced within an organism, tissue, or cell.
Endolymph
/ˈɛndoʊlɪmf/
The fluid contained in the membranous labyrinth of the inner ear.
Endometriosis
/ˌɛndoʊˌmiːtriˈoʊsɪs/
A condition where tissue similar to the lining of the uterus grows outside the uterus.
Endometrium
/ˌɛndoʊˈmiːtriəm/
The mucous membrane lining the uterus, which thickens during the menstrual cycle in preparation for possible implantation of an embryo.
Endorphins
/ɛnˈdɔːrfɪnz/
A group of hormones secreted within the brain and nervous system that activate the body's opiate receptors and have a painkilling effect.
Endoscopy
/ɛnˈdɒskəpi/
A procedure in which an instrument is introduced into the body to give a view of its internal parts.
Endosteum
/ɛnˈdɒstiəm/
A thin vascular membrane of connective tissue that lines the inner surface of the bony tissue that forms the medullary cavity of long bones.
Endothelium
/ˌɛndoʊˈθiːliəm/
The tissue which forms a single layer of cells lining various organs and cavities of the body, especially the blood vessels and heart.
Endotoxin
/ˌɛndoʊˈtɒksɪn/
A toxin that is present inside a bacterial cell and is released when the cell disintegrates.
Endotracheal
/ˌɛndoʊˈtreɪkiəl/
Situated or occurring within the trachea.
Enema
/ˈɛnɪmə/
A procedure in which liquid or gas is injected into the rectum, typically to expel its contents.
Enophthalmos
/ˌɛnɒfˈθælmɒs/
Posterior displacement of the eyeball within the orbit; a 'sunken' eye.
Enosid
/ˈɛnoʊsɪd/
A term relating to certain chemical compounds found in specific biological secretions.
Ensiform
/ˈɛnsɪfɔːrm/
Sword-shaped; another name for the xiphoid process at the bottom of the sternum.
Enteritis
/ˌɛntəˈraɪtɪs/
Inflammation of the intestine, especially the small intestine, usually accompanied by diarrhea.
Enterocele
/ˈɛntərəˌsiːl/
A protrusion of a portion of the small intestine into the vagina; a type of pelvic organ prolapse.
Enterocolitis
/ˌɛntəroʊkoʊˈlaɪtɪs/
Inflammation of both the small intestine and the colon.
Enterostomy
/ˌɛntəˈrɒstəmi/
A surgical procedure to create an opening into the small intestine through the abdominal wall.
Entropion
/ɛnˈtroʊpiɒn/
A medical condition in which the eyelid (usually the lower lid) folds inward, causing the eyelashes to rub against the cornea.
Enucleation
/iːˌnuːkliˈeɪʃən/
The surgical removal of an entire organ or structure without rupture, such as the eyeball or a cyst.
Enuresis
/ˌɛnjʊˈriːsɪs/
Involuntary urination, especially by children at night.
Enzyme
/ˈɛnzaɪm/
A substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
Enzyme
/ˈɛnzaɪm/
A biological catalyst that accelerates chemical reactions in the body.
Eosinophil
/ˌiːəˈsɪnəfɪl/
A type of disease-fighting white blood cell, often indicating a parasitic infection, an allergic reaction, or cancer.
Ependyma
/ɛˈpɛndɪmə/
The thin membrane of glial cells lining the ventricles of the brain and the central canal of the spinal cord.
Epianesthesia
/ˌɛpiˌænəsˈθiːziə/
Anesthesia on or upon the surface of a part of the body.
Epicanthus
/ˌɛpɪˈkænθəs/
A vertical fold of skin on either side of the nose, covering the inner corner of the eye.
Epicardium
/ˌɛpɪˈkɑːrdiəm/
A serous membrane that forms the innermost layer of the pericardium and the outer surface of the heart.
Epicondyle
/ˌɛpɪˈkɒndaɪl/
A protuberance above or on the condyle of a long bone, especially either of the two at the elbow end of the humerus.
Epicranium
/ˌɛpɪˈkreɪniəm/
The structures covering the cranium, including the scalp and muscles.
Epidemic
/ˌɛpɪˈdɛmɪk/
A widespread occurrence of an infectious disease in a community at a particular time.
Epidemiology
/ˌɛpɪˌdiːmiˈɒlədʒi/
The branch of medicine which deals with the incidence, distribution, and possible control of diseases.
Epidermis
/ˌɛpɪˈdɜːrmɪs/
The surface epithelium of the skin, overlying the dermis.
Epididymis
/ˌɛpɪˈdɪdɪmɪs/
A highly convoluted duct behind the testis, along which sperm passes to the vas deferens.
Epidural
/ˌɛpɪˈdjʊərəl/
On or around the dura mater, typically referring to an anesthetic injected into the epidural space of the spinal cord.
Epigastrium
/ˌɛpɪˈɡæstriəm/
The part of the upper abdomen immediately over the stomach.
Epiglottis
/ˌɛpɪˈɡlɒtɪs/
A flap of cartilage at the root of the tongue, which is depressed during swallowing to cover the opening of the windpipe.
Epilepsy
/ˈɛpɪlɛpsi/
A neurological disorder marked by sudden recurrent episodes of sensory disturbance, loss of consciousness, or convulsions, associated with abnormal electrical activity in the brain.
Epileptiform
/ˌɛpɪˈlɛptɪfɔːrm/
Resembling epilepsy or its manifestations, such as certain types of seizures or EEG patterns.
Epimysium
/ˌɛpɪˈmɪziəm/
A sheath of fibrous elastic tissue surrounding a muscle.
Epinephrine
/ˌɛpɪˈnɛfrɪn/
Another term for adrenaline; a hormone secreted by the adrenal glands, especially in conditions of stress.
Epinephrine
/ˌɛpɪˈnɛfrɪn/
A hormone and neurotransmitter involved in the 'fight or flight' response; also called adrenaline.
Epiphysis
/ɪˈpɪfɪsɪs/
The end part of a long bone, initially growing separately from the shaft.
Episclera
/ˌɛpɪˈsklɪərə/
The outermost layer of the sclera (the white of the eye).
Episiotomy
/ɪˌpɪziˈɒtəmi/
A surgical cut made at the opening of the vagina during childbirth, to aid a difficult delivery and prevent rupture of tissues.
Epispadias
/ˌɛpɪˈspeɪdiəs/
A rare congenital abnormality where the urethral opening is on the upper surface of the penis or near the clitoris.
Epistaxis
/ˌɛpɪˈstæksɪs/
The medical term for a nosebleed.
Episthotonos
/ˌɛpɪsˈθɒtənəs/
Spasmodic tetanic curving of the body forward.
Epistropheus
/ˌɛpɪˈstroʊfiəs/
The second cervical vertebra, more commonly known as the axis.
Epitestosterone
/ˌɛpɪtɛˈstɒstəˌroʊn/
A natural steroid that is an epimer of testosterone, often measured in drug testing to detect exogenous testosterone use.
Epithelium
/ˌɛpɪˈθiːliəm/
Thin tissue forming the outer layer of a body's surface and lining the alimentary canal and other hollow structures.
Eponychium
/ˌɛpəˈnɪkiəm/
The thickened layer of skin at the base of a fingernail or toenail; commonly called the cuticle.
Epoprostenol
/ˌɛpəˈprɒstənɒl/
A pharmaceutical form of prostacyclin used to treat pulmonary arterial hypertension.
Epulis
/ɪˈpjuːlɪs/
Any tumor-like enlargement of the gums or alveolar mucosa.
Equilibrium
/ˌiːkwɪˈlɪbriəm/
A state of physical balance; in biochemistry, a state in which opposite forces or influences are balanced.
Erb's Palsy
/ɜːrbz ˈpɔːlzi/
Paralysis of the arm caused by injury to the upper group of the arm's main nerves (brachial plexus), specifically the C5–C6 nerve roots.
Erector Spinae
/ɪˈrɛktər ˈspaɪniː/
A group of muscles and tendons which run more or less the length of the spine on the left and right, helping to straighten the back.
Erepsin
/ɪˈrɛpsɪn/
A complex of enzymes in the intestinal juice that completes the digestion of proteins by converting polypeptides into amino acids.
Ergonomics
/ˌɜːrɡəˈnɒmɪks/
The study of people's efficiency in their working environment, often used to prevent musculoskeletal disorders.
Ergotamine
/ərˈɡɒtəmiːn/
An alkaloid derived from ergot used in the treatment of migraine headaches.
Erogenous
/ɪˈrɒdʒənəs/
Sensitive to sexual stimulation; applied to specific areas of the body.
Erosion
/ɪˈroʊʒən/
The gradual destruction of tissue, such as a gastric ulcer eroding the stomach lining or the wearing away of tooth enamel.
Erotomania
/ɪˌrɒtəˈmeɪniə/
A psychological disorder in which a person has a delusional belief that another person is in love with them.
Eructation
/ˌiːrʌkˈteɪʃən/
The act of belching or burping.
Eructation
/ˌiːrʌkˈteɪʃən/
The oral expulsion of gas from the stomach; a belch.
Eruption
/ɪˈrʌpʃən/
The appearance of a rash or skin lesion; also the process of a tooth breaking through the gum.
Erythema
/ˌɛrɪˈθiːmə/
Superficial reddening of the skin, usually in patches, as a result of injury or irritation causing dilatation of the blood capillaries.
Erythralgia
/ˌɛrɪˈθrældʒə/
Painful redness of the skin.
Erythremia
/ˌɛrɪˈθriːmiə/
An abnormal increase in the number of red blood cells; also known as polycythemia vera.
Erythritol
/ɪˈrɪθrɪˌtɒl/
A sugar alcohol used as a low-calorie sweetener.
Erythroblast
/ɪˈrɪθrəˌblæst/
An immature red blood cell that still possesses a nucleus.
Erythrocyte
/ɪˈrɪθrəˌsaɪt/
A red blood cell that (in humans) is typically a biconcave disc without a nucleus, containing hemoglobin.
Erythroderma
/ɪˌrɪθroʊˈdɜːrmə/
Intense and usually widespread reddening of the skin due to inflammatory disease.
Erythromycin
/ɪˌrɪθroʊˈmaɪsɪn/
An antibiotic used to treat various bacterial infections, often for patients allergic to penicillin.
Erythropoiesis
/ɪˌrɪθroʊpɔɪˈiːsɪs/
The production of red blood cells.
Erythropoietin
/ɪˌrɪθroʊˈpɔɪətɪn/
A hormone produced primarily by the kidneys that plays a key role in the production of red blood cells (EPO).
Escape rhythm
/ɪˈskeɪp ˈrɪðəm/
A compensatory heart rhythm that arises when the normal pacemaker (SA node) fails.
Eschar
/ˈɛskɑːr/
A dry, dark scab or falling away of dead skin, typically caused by a burn, infection, or necrotic skin disease.
Escharotomy
/ˌɛskəˈrɒtəmi/
A surgical procedure used to treat full-thickness circumferential burns by incising the eschar to relieve pressure.
Escharotomy
/ˌɛskəˈrɒtəmi/
A surgical procedure used to treat full-thickness circumferential burns by incising the eschar to relieve pressure.
Esculent
/ˈɛskjʊlənt/
Fit to be eaten; edible. Often used in nutritional medicine regarding dietary choices.
Esculent
/ˈɛskjʊlənt/
Fit to be eaten; edible. Often used in nutritional medicine regarding dietary choices.
Esmarch bandage
/ˈɛsmɑːrk ˈbændɪdʒ/
A narrow strip of rubber used to expel blood from a limb before surgery and to maintain a bloodless field.
Esmarch bandage
/ˈɛsmɑːrk ˈbændɪdʒ/
A narrow strip of rubber used to expel blood from a limb before surgery and to maintain a bloodless field.
Esophagoscopy
/ɪˌsɒfəˈɡɒskəpi/
A procedure in which a flexible endoscope is inserted through the mouth or nose to view the esophagus.
Esophagus
/ɪˈsɒfəɡəs/
The part of the alimentary canal that connects the throat to the stomach; the gullet.
Esophoria
/ˌɛsoʊˈfɔːriə/
A condition in which there is a tendency for the eyes to turn inward toward the nose.
Esophoria
/ˌɛsoʊˈfɔːriə/
A condition in which there is a tendency for the eyes to turn inward toward the nose.
Esotropia
/ˌɛsoʊˈtroʊpiə/
A form of strabismus (eye misalignment) in which one or both eyes turn inward; commonly called cross-eyed.
Esotropia
/ˌɛsoʊˈtroʊpiə/
A form of strabismus (eye misalignment) in which one or both eyes turn inward; commonly called cross-eyed.
Essential amino acids
/ɪˈsɛnʃəl əˈmiːnoʊ ˈæsɪdz/
Amino acids that cannot be synthesized by the body and must be obtained from the diet.
Essential amino acids
/ɪˈsɛnʃəl əˈmiːnoʊ ˈæsɪdz/
Amino acids that cannot be synthesized by the body and must be obtained from the diet.
Essential hypertension
/ɪˈsɛnʃəl ˌhaɪpərˈtɛnʃən/
High blood pressure that doesn't have a known secondary cause; also called primary hypertension.
Essential hypertension
/ɪˈsɛnʃəl ˌhaɪpərˈtɛnʃən/
High blood pressure that doesn't have a known secondary cause; also called primary hypertension.
Esterase
/ˈɛstəreɪs/
An enzyme that catalyzes the hydrolysis of an ester into an alcohol and an acid.
Esterase
/ˈɛstəreɪs/
An enzyme that catalyzes the hydrolysis of an ester into an alcohol and an acid.
Estradiol
/ˌɛstrəˈdaɪɒl/
The most potent and prevalent form of mammalian estrogenic hormone.
Estradiol
/ˌɛstrəˈdaɪɒl/
The most potent and prevalent form of mammalian estrogenic hormone.
Estriols
/ˈɛstriɒlz/
A weak estrogen, mostly produced during pregnancy by the placenta.
Estriols
/ˈɛstriɒlz/
A weak estrogen, mostly produced during pregnancy by the placenta.
Estrogen
/ˈɛstrədʒən/
Any of a group of steroid hormones which promote the development and maintenance of female characteristics of the body.
Estrogens
/ˈɛstrədʒənz/
A group of hormones that primarily influence the female reproductive system and secondary sex characteristics.
Estrogens
/ˈɛstrədʒənz/
A group of hormones that primarily influence the female reproductive system and secondary sex characteristics.
Estrone
/ˈɛstroʊn/
The least prevalent of the three main estrogens, primarily produced after menopause.
Estrone
/ˈɛstroʊn/
The least prevalent of the three main estrogens, primarily produced after menopause.
Ethanol
/ˈɛθənɒl/
The primary alcohol in alcoholic beverages; used medically as an antiseptic and solvent.
Ethanolamine
/ˌɛθəˈnɒləmiːn/
A viscous hygroscopic amino alcohol used in the synthesis of surface-active agents and pharmaceuticals.
Ethanolamine
/ˌɛθəˈnɒləmiːn/
A viscous hygroscopic amino alcohol used in the synthesis of surface-active agents and pharmaceuticals.
Ethmoid Bone
/ˈɛθmɔɪd boʊn/
A square bone at the root of the nose, forming part of the cranium and having many perforations through which the olfactory nerves pass.
Ethmoiditis
/ˌɛθmɔɪˈdaɪtɪs/
Inflammation of the ethmoid sinuses, located between the eyes.
Ethmoiditis
/ˌɛθmɔɪˈdaɪtɪs/
Inflammation of the ethmoid sinuses, located between the eyes.
Ethyl chloride
/ˈɛθəl ˈklɔːraɪd/
A topical anesthetic used to numb a small area of skin before minor surgery or injections.
Ethyl chloride
/ˈɛθəl ˈklɔːraɪd/
A topical anesthetic used to numb a small area of skin before minor surgery or injections.
Etiology
/ˌiːtiˈɒlədʒi/
The cause, set of causes, or manner of causation of a disease or condition.
Euchromatin
/juːˈkroʊmətɪn/
A lightly packed form of chromatin that is enriched in genes and is often under active transcription.
Euchromatin
/juːˈkroʊmətɪn/
A lightly packed form of chromatin that is enriched in genes and is often under active transcription.
Euphoria
/juːˈfɔːriə/
A feeling or state of intense excitement and happiness; can be a clinical sign of drug use or certain mental states.
Eupnea
/juːpˈniːə/
Normal, good, unlabored breathing, sometimes known as quiet breathing or resting respiratory rate.
Eupnea
/juːpˈniːə/
Normal, good, unlabored breathing, sometimes known as quiet breathing or resting respiratory rate.
Eustachian Tube
/juːˈsteɪʃən tjuːb/
A narrow passage leading from the pharynx to the cavity of the middle ear, permitting the equalization of air pressure on each side of the eardrum.
Euthanasia
/ˌjuːθəˈneɪʒə/
The painless killing of a patient suffering from an incurable and painful disease or in an irreversible coma.
Euthyroid
/juːˈθaɪrɔɪd/
Having a normally functioning thyroid gland.
Euthyroid
/juːˈθaɪrɔɪd/
Having a normally functioning thyroid gland.
Evacuation
/ɪˌvækjʊˈeɪʃən/
The process of emptying the bowels or removing the contents of a body cavity.
Evacuation
/ɪˌvækjʊˈeɪʃən/
The process of emptying the bowels or removing the contents of a body cavity.
Eversion
/ɪˈvɜːrʒən/
The act of turning inside out or rotating outward, such as the sole of the foot turning away from the midline.
Evisceration
/ɪˌvɪsəˈreɪʃən/
The removal of internal organs; in ophthalmology, the removal of the contents of the eyeball, leaving the sclera intact.
Evisceration
/ɪˌvɪsəˈreɪʃən/
The removal of internal organs; in ophthalmology, the removal of the contents of the eyeball, leaving the sclera intact.
Evolution
/ˌɛvəˈluːʃən/
The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms.
Exacerbate
/ɪɡˈzæsərˌbeɪt/
To make a problem, bad situation, or negative feeling (such as pain or a disease) worse.
Exacerbation
/ɪɡˌzæsərˈbeɪʃən/
An increase in the severity of a disease or its signs and symptoms.
Exanthem
/ɛɡˈzænθəm/
A skin rash accompanying a disease or fever.
Exanthema
/ˌɛksænˈθiːmə/
A widespread rash, usually in children, often accompanied by systemic symptoms such as fever, malaise, and headache.
Excision
/ɪkˈsɪʒən/
The act of removing something by cutting, such as a tumor or an organ.
Excitability
/ɪkˌsaɪtəˈbɪlɪti/
The property of a cell (like a neuron or muscle fiber) that allows it to respond to a stimulus by generating an electrical impulse.
Excitotoxin
/ɪkˈsaɪtoʊˌtɒksɪn/
A substance that overstimulates neurotransmitter receptors, potentially leading to nerve cell damage or death.
Excoriate
/ɪkˈskɔːriˌeɪt/
To damage or remove part of the surface of the skin, often by scratching or chemical irritation.
Excoriation
/ɪkˌskɔːriˈeɪʃən/
A place where the skin is scraped or abraded, often due to scratching.
Excreta
/ɪkˈskriːtə/
Waste matter (such as sweat, urine, or feces) discharged from the body.
Excretion
/ɪkˈskriːʃən/
The process of eliminating or expelling waste matter from the body.
Exencephaly
/ˌɛksɛnˈsɛfəli/
A rare malformation where the brain is located outside of the skull, usually occurring during embryonic development.
Exenteration
/ɪkˌsɛntəˈreɪʃən/
The surgical removal of the entire contents of a body cavity, such as the orbit (eye socket) or pelvis.
Exercise-induced asthma
/ˈɛksərsaɪz ɪnˈdjuːst ˈæzmə/
A narrowing of the airways in the lungs triggered by strenuous physical activity.
Exfoliation
/ɛksˌfoʊliˈeɪʃən/
The shedding of the outermost layer of tissue, such as skin or scales.
Exhalation
/ˌɛkshəˈleɪʃən/
The process of breathing out.
Exocrine
/ˈɛksəkrɪn/
Relating to glands that secrete their products through ducts onto an epithelial surface (e.g., sweat or salivary glands).
Exocytosis
/ˌɛksoʊsaɪˈtoʊsɪs/
A process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane.
Exogenous
/ɛkˈsɒdʒənəs/
Relating to or developing from external factors; originating outside the organism.
Exon
/ˈɛksɒn/
A segment of a DNA or RNA molecule containing information coding for a protein or peptide sequence.
Exophthalmos
/ˌɛksɒfˈθælmɒs/
Abnormal protrusion of the eyeball or eyeballs, often seen in Graves' disease.
Exophthalmos
/ˌɛksɒfˈθælmɒs/
Abnormal protrusion of the eyeball or eyeballs.
Exostosis
/ˌɛksɒˈstoʊsɪs/
A benign outgrowth of cartilaginous tissue on a bone.
Exostosis
/ˌɛksɒˈstoʊsɪs/
A benign outgrowth of cartilaginous tissue on a bone.
Exotoxin
/ˌɛksoʊˈtɒksɪn/
A toxin released by a living bacterial cell into its surroundings.
Exotoxin
/ˌɛksoʊˈtɒksɪn/
A toxin released by a living bacterial cell into its surroundings.
Expectoration
/ɪkˌspɛktəˈreɪʃən/
The act of coughing up and spitting out mucus or phlegm from the respiratory tract.
Expectoration
/ɪkˌspɛktəˈreɪʃən/
The act of coughing up and spitting out mucus from the respiratory tract.
Expiration
/ˌɛkspɪˈreɪʃən/
The end of a period of time; in medicine, the act of breathing out or the cessation of life.
Expiratory reserve volume
/ɪkˈspaɪrətɔːri rɪˈzɜːrv ˈvɒljuːm/
The additional amount of air that can be expired from the lungs by determined effort after normal expiration.
Exsanguinate
/ɪkˈsæŋɡwɪneɪt/
To drain of blood; to cause a severe or fatal loss of blood.
Exsanguination
/ɛkˌsæŋɡwɪˈneɪʃən/
Severe loss of blood; the act of draining a body of blood.
Exstrophy
/ˈɛkstrəfi/
A congenital malformation in which a hollow organ (typically the bladder) is turned inside out or open to the outside of the body.
Extension
/ɪkˈstɛnʃən/
A straightening movement that increases the angle between body parts.
Extensor
/ɪkˈstɛnsər/
A muscle whose contraction extends or straightens a limb or other part of the body.
Extravasation
/ɛkˌstrævəˈseɪʃən/
The leakage of fluid (such as intravenous medication or blood) from its container (such as a vessel) into the surrounding tissue.
Extrinsic
/ɛkˈstrɪnsɪk/
Not part of the essential nature of someone or something; coming or derived from outside.
Extroversion
/ˌɛkstrəˈvɜːrʒən/
A personality trait characterized by outgoingness and a preference for social interaction; also refers to turning an organ inside out.
Exudate
/ˈɛksjʊdeɪt/
A mass of cells and fluid that has seeped out of blood vessels or an organ, especially in inflammation.
Exudate
/ˈɛksjʊdeɪt/
A mass of cells and fluid that has seeped out of blood vessels or an organ, especially in inflammation.