K-complex
/ˈkeɪ ˈkɒmplɛks/
A specific waveform seen on an electroencephalogram (EEG) during stage 2 sleep.
K-urea
/keɪ jʊˈriːə/
A measure of the clearance of urea during dialysis.
K-vitamin
/keɪ ˈvaɪtəmɪn/
Variant for Vitamin K; essential for blood clotting and bone metabolism.
K-wire
/ˈkeɪ waɪər/
Abbreviation for Kirschner wire; used in orthopedics to stabilize bone fragments.
Kala-azar
/ˌkɑːlə əˈzɑːr/
Also known as visceral leishmaniasis; a slow-progressing indigenous disease caused by a protozoan parasite.
Kallmann syndrome
/ˈkælmən ˈsɪndroʊm/
A genetic condition where the primary symptoms are delayed or absent puberty and an absent or decreased sense of smell.
Kanner's syndrome
/ˈkænərz ˈsɪndroʊm/
The original name for 'classic' autism.
Karyocyte
/ˈkærioʊsaɪt/
Any cell that possesses a nucleus.
Karyolysis
/ˌkæriˈɒlɪsɪs/
The dissolution of the cell nucleus, a stage in cell death (necrosis).
Karyomegaly
/ˌkærioʊˈmɛɡəli/
Abnormal enlargement of a cell nucleus.
Karyoplasm
/ˈkærioʊˌplæzəm/
The protoplasm of a cell nucleus; also known as nucleoplasm.
Karyorrhexis
/ˌkærioʊˈrɛksɪs/
The destructive fragmentation of the nucleus of a dying cell.
Karyosome
/ˈkærioʊˌsoʊm/
A dense mass of chromatin within the cell nucleus.
Karyotheca
/ˌkærioʊˈθiːkə/
The nuclear membrane or envelope.
Karyotype
/ˈkærioʊˌtaɪp/
An individual's complete set of chromosomes; also a laboratory image of those chromosomes.
Kastle-Meyer test
/ˈkæsəl ˈmaɪər tɛst/
A forensic chemistry test used to determine the presence of blood.
Katabasis
/kəˈtæbəsɪs/
The decline or stage of remission of a disease.
Katatonia
/ˌkætəˈtoʊniə/
Variant spelling of catatonia; a state of neurogenic motor immobility.
Kathemoglobin
/kætˌhiːməˈɡloʊbɪn/
A compound of hematin and denatured globin; a breakdown product of hemoglobin.
Kathisophobia
/kəˌθɪsəˈfoʊbiə/
An abnormal or persistent fear of sitting down.
Kava kava
/ˈkɑːvə ˈkɑːvə/
An herbal supplement sometimes used for anxiety, but associated with risk of liver toxicity.
Kava-induced dermopathy
/ˈkɑːvə ɪnˈdjuːst dərˈmɒpəθi/
A scaly skin rash caused by chronic use of kava.
Kawasaki disease
/ˌkɑːwəˈsɑːki dɪˈziːz/
A condition that causes inflammation in the walls of some blood vessels in the body, most common in infants and young children.
Kawase's triangle
/kɑːˈwɑːsiːz ˈtraɪæŋɡəl/
An anatomical landmark in the skull used by neurosurgeons to access the petrous apex.
Kayser's disease
/ˈkaɪzərz dɪˈziːz/
An older term for a specific type of chronic skin inflammation.
Kayser-Fleischer ring
/ˌkaɪzər ˈflaɪʃər rɪŋ/
A dark ring that appears to encircle the iris of the eye, a sign of Wilson's disease (copper buildup).
Kearns-Sayre syndrome
/ˈkɜːrnz ˈsɛər ˈsɪndroʊm/
A mitochondrial disease characterized by progressive external ophthalmoplegia and heart block.
Kefir
/kəˈfɪər/
A fermented milk drink that is a rich source of probiotics.
Keith-Wagener-Barker classification
/kiːθ ˈveɪɡnər ˈbɑːrkər/
A system used to classify the severity of hypertensive retinopathy in the eye.
Kelis
/ˈkiːlɪs/
An archaic term for a skin blemish or morphea.
Kelly's sign
/ˈkɛliːz saɪn/
A surgical sign where the ureter visible in the wound contracts when touched with a forceps.
Keloid
/ˈkiːlɔɪd/
A raised, enlarged scar that grows beyond the boundaries of the original wound.
Kenophobia
/ˌkɛnoʊˈfoʊbiə/
Fear of empty spaces or voids.
Keratectasia
/ˌkɛrətɛkˈteɪʒə/
A thinning and bulging of the cornea.
Keratectasia
/ˌkɛrətɛkˈteɪʒə/
A secondary bulging of the cornea, often occurring as a complication of LASIK surgery.
Keratectomy
/ˌkɛrəˈtɛktəmi/
Surgical removal of a part of the cornea.
Keratin
/ˈkɛrətɪn/
A fibrous protein forming the main structural constituent of hair, feathers, hoofs, claws, and horns.
Keratitis
/ˌkɛrəˈtaɪtɪs/
Inflammation of the cornea of the eye.
Keratocentesis
/ˌkɛrətoʊsɛnˈtiːsɪs/
Puncture of the cornea for diagnostic or therapeutic purposes.
Keratoconjunctivitis
/ˌkɛrətoʊkənˌdʒʌŋktɪˈvaɪtɪs/
Inflammation of both the cornea and the conjunctiva.
Keratoconjunctivitis sicca
/ˌkɛrətoʊkənˌdʒʌŋktɪˈvaɪtɪs ˈsɪkə/
The medical term for dry eye syndrome.
Keratoconus
/ˌkɛrətoʊˈkoʊnəs/
A progressive eye disease in which the normally round cornea thins and begins to bulge into a cone-like shape.
Keratodermia
/ˌkɛrətoʊˈdɜːrmiə/
Hypertrophy of the horny layer of the skin, especially on the palms and soles.
Keratodermia blennorrhagica
/ˌkɛrətoʊˈdɜːrmiə ˌblɛnəˈrædʒɪkə/
Skin lesions on the palms and soles associated with reactive arthritis.
Keratoglobus
/ˌkɛrətoʊˈɡloʊbəs/
A rare degenerative non-inflammatory disorder of the eye in which the cornea becomes thin and globular.
Keratohelcosis
/ˌkɛrətoʊhɛlˈkoʊsɪs/
Ulceration of the cornea.
Keratohyalin
/ˌkɛrətoʊˈhaɪəlɪn/
A protein precursor to keratin, found in the granules of the stratum granulosum of the skin.
Keratoiritis
/ˌkɛrətoʊaɪˈraɪtɪs/
Inflammation of both the cornea and the iris.
Keratoleukoma
/ˌkɛrətoʊluːˈkoʊmə/
A white opacity of the cornea.
Keratolysis
/ˌkɛrəˈtɒlɪsɪs/
The loosening or shedding of the horny layer (keratin) of the epidermis.
Keratoma
/ˌkɛrəˈtoʊmə/
A localized overgrowth of the horny layer of the skin; a callus.
Keratomalacia
/ˌkɛrətoʊməˈleɪʃə/
Softening and ulceration of the cornea, often caused by Vitamin A deficiency.
Keratometer
/ˌkɛrəˈtɒmɪtər/
An instrument for measuring the curvature of the anterior surface of the cornea.
Keratopathy
/ˌkɛrəˈtɒpəθi/
Any non-inflammatory disease of the cornea.
Keratophyra
/ˌkɛrəˈtɒfɪrə/
A horny growth on the skin; an old term for a cutaneous horn.
Keratoplasty
/ˈkɛrətoʊˌplæsti/
A surgical procedure where a damaged or diseased cornea is replaced by donated corneal tissue; a cornea transplant.
Keratorrhexis
/ˌkɛrətoʊˈrɛksɪs/
Rupture of the cornea.
Keratoscleritis
/ˌkɛrətoʊskləˈraɪtɪs/
Inflammation of both the cornea and the sclera.
Keratoscopy
/ˌkɛrəˈtɒskəpi/
Examination of the cornea to determine its curvature.
Keratosis
/ˌkɛrəˈtoʊsɪs/
Any skin condition where there is an overgrowth of keratin (e.g., actinic keratosis).
Keratotome
/ˈkɛrətoʊˌtoʊm/
A knife used in surgery on the cornea.
Keratotomy
/ˌkɛrəˈtɒtəmi/
A surgical incision into the cornea.
Kerion
/ˈkɪəriɒn/
An inflammatory, boggy, crusty fungal infection of the scalp.
Kernicterus
/kɛrˈnɪktərəs/
Brain damage caused by excessive jaundice in a newborn.
Kernohan's notch
/ˈkɜːrnoʊhænz nɒtʃ/
A cerebral peduncle indentation caused by transtentorial herniation.
Kernohan's phenomenon
/ˈkɜːrnoʊhænz fəˈnɒmɪnən/
A paradoxical clinical sign where brain compression on one side causes paralysis on the same side.
Ketazolam
/kiːˈteɪzoʊlæm/
A benzodiazepine drug used for its sedative and anxiolytic properties.
Ketoconazole
/ˌkiːtoʊˈkɒnəˌzoʊl/
A broad-spectrum antifungal medication.
Ketogenesis
/ˌkiːtoʊˈdʒɛnəsɪs/
The production of ketone bodies as an alternative energy source.
Ketol
/ˈkiːtɒl/
A chemical compound that contains both a ketone and an alcohol group.
Ketolysis
/kiːˈtɒlɪsɪs/
The breakdown of ketone bodies.
Ketone bodies
/ˈkiːtoʊn ˈbɒdiːz/
Acetoacetate, beta-hydroxybutyrate, and acetone; produced during fatty acid metabolism.
Ketonemic
/ˌkiːtoʊˈniːmɪk/
Pertaining to the presence of ketones in the blood.
Ketoprofen lysine
/ˌkiːtoʊˈproʊfɛn ˈlaɪsiːn/
A salt of ketoprofen used to manage inflammatory pain.
Ketorolac
/kiːˈtɔːrəˌlæk/
A potent nonsteroidal anti-inflammatory drug (NSAID) used for short-term pain management.
Ketotic
/kiːˈtɒtɪk/
Pertaining to or characterized by ketosis.
Khelloside
/ˈkɛloʊsaɪd/
A glucoside derivative used for its vascular-relaxant effects.
Kidd antigen
/kɪd ˈæntɪdʒən/
Antigens on red blood cells that can cause transfusion reactions or hemolytic disease of the newborn.
Kidd blood group
/kɪd blʌd ɡruːp/
A system of antigens on red blood cells important in transfusion medicine.
Kienbock's disease
/ˈkiːnbɒks dɪˈziːz/
Avascular necrosis of the lunate bone in the wrist.
Kilian's pelvis
/ˈkɪliənz ˈpɛlvɪs/
Also known as an acanthopelyx; a pelvis with a spinous prominence on the pubic bone.
Killian's dehiscence
/ˈkɪliənz dɪˈhɪsəns/
A triangular area in the wall of the pharynx where Zenker's diverticulum occurs.
Kilo-
/ˈkɪloʊ/
Prefix meaning one thousand.
Kimmelstiel-Wilson syndrome
/ˈkɪməlstiːl ˈwɪlsən ˈsɪndroʊm/
Specific kidney damage (nodular glomerulosclerosis) caused by long-term diabetes.
Kinase inhibitors
/ˈkaɪneɪs ɪnˈhɪbɪtərz/
A type of targeted drug therapy that blocks enzymes involved in cell signaling and growth.
Kine
/ˈkɪni/
Prefix meaning movement or motion.
Kinematics
/ˌkɪnɪˈmætɪks/
The study of motion in the human body without regard to the forces causing it.
Kinesalgia
/ˌkɪnɪsˈældʒə/
Pain caused by muscular movement.
Kinesimeter
/ˌkɪnɪˈsɪmɪtər/
An instrument used to measure the extent of movements of a body part.
Kinesitherapy
/kɪˌniːsɪˈθɛrəpi/
Therapeutic treatment involving active or passive movement of body parts.
Kinesodic
/ˌkɪnɪˈsɒdɪk/
Relating to the path of motor impulses.
Kinesthesia
/ˌkɪnɪsˈθiːʒə/
The perception of body position and movement through space.
Kinetocardiogram
/kɪˌnɛtoʊˈkɑːrdioʊˌɡræm/
A record of the absolute motion of the chest wall caused by the heart's activity.
Kinetochore
/kɪˈnɛtəˌkɔːr/
A protein structure on chromatids where the spindle fibers attach during cell division.
Kinetosis
/ˌkɪnɪˈtoʊsɪs/
The medical term for motion sickness.
Kiotomy
/kaɪˈɒtəmi/
Surgical removal of the uvula or a portion of it.
Kirschner wire fixation
/ˈkɜːrʃnər ˌwaɪər fɪkˈseɪʃən/
The surgical use of pins to stabilize bone fractures.
Kite's method
/kaɪts ˈmɛθəd/
A technique involving serial casting used to treat clubfoot in infants.
Kleeblattschädel
/ˈkliːblætˌʃeɪdəl/
A cloverleaf-shaped skull deformity caused by premature fusion of cranial sutures.
Kleine-Levin syndrome
/ˈklaɪnə ˈlɛvɪn ˈsɪndroʊm/
A rare sleep disorder characterized by persistent episodic hypersomnia and cognitive/behavioral changes.
Kleptophobia
/ˌklɛptəˈfoʊbiə/
An abnormal fear of stealing or being robbed.
Klippel-Feil syndrome
/ˈklɪpəl faɪl ˈsɪndroʊm/
A rare bone disorder characterized by the abnormal joining (fusion) of two or more spinal bones in the neck.
Klippel-Trenaunay syndrome
/ˈklɪpəl treɪnoʊˈneɪ ˈsɪndroʊm/
A rare congenital vascular disorder affecting limb development.
Klumpke's contracture
/ˈklʊmpkiːz kənˈtræktʃər/
Permanent shortening and thickening of the hand muscles following Klumpke's paralysis.
Knee arthritis
/niː ɑːrˈθraɪtɪs/
Inflammation of the knee joint, often resulting in pain and loss of cartilage.
Knee effusion
/niː ɪˈfjuːʒən/
Fluid on the knee; the accumulation of excess fluid in or around the knee joint.
Knee replacement
/niː rɪˈpleɪsmənt/
Arthroplasty; the surgical procedure to replace a weight-bearing joint surface with a prosthesis.
Kneeling position
/ˈniːlɪŋ pəˈzɪʃən/
A clinical position used in certain physical examinations or therapies.
Knife, Gamma
/naɪf ˈɡæmə/
A precise form of radiation therapy (radiosurgery) used to treat brain tumors.
Knight's spinal brace
/naɪts ˈspaɪnəl breɪs/
A rigid orthopedic brace used to limit motion in the lumbar spine.
Knot, Surgeon's
/nɒt ˈsɜːrdʒənz/
A specific type of double-loop knot used to prevent slipping in surgical sutures.
Kobihi
/koʊˈbiːhi/
An indigenous or traditional clinical term for a localized skin inflammation.
Koch's postulates
/kɒks ˈpɒstjʊleɪts/
Four criteria designed to establish a causative relationship between a microbe and a disease.
Kocher's point
/ˈkoʊkərz pɔɪnt/
A common entry point through the skull for a ventricular catheter to drain cerebrospinal fluid.
Koebner phenomenon
/ˈkɛbnər fəˈnɒmɪnən/
The appearance of skin lesions on lines of trauma, typical in psoriasis and lichen planus.
Kohler's bone
/ˈkoʊlərz boʊn/
Referring to the tarsal navicular bone when affected by osteochondritis.
Kohler's disease
/ˈkoʊlərz dɪˈziːz/
Rare bone disorder of the foot found in children, involving the navicular bone.
Kohlrausch's valve
/ˈkoʊlraʊʃɪz vælv/
The middle transverse fold of the rectum.
Koilocyte
/ˈkɔɪloʊsaɪt/
A squamous epithelial cell with a halo around the nucleus, indicating HPV infection.
Koilocytosis
/ˌkɔɪloʊsaɪˈtoʊsɪs/
The state of having koilocytes present in a tissue sample (often seen in Pap smears).
Koilonychia
/ˌkɔɪloʊˈnɪkiə/
Spoon-shaped nails, often indicating chronic iron deficiency.
Kokan
/ˈkoʊkæn/
A clinical term in some regions for a hardening or induration of the skin.
Kombucha
/kɒmˈbuːtʃə/
A fermented tea drink; studied for its probiotic benefits but carries risks if prepared unhygienically.
Konimeter
/koʊˈnɪmɪtər/
A device used to measure the amount of dust in the air, relevant to respiratory health.
Kony
/ˈkoʊni/
An anatomical suffix or term relating to a cone or cone-shaped structure.
Kopf-
/kɒpf/
A prefix meaning head (from German).
Koplik's sign
/ˈkɒplɪks saɪn/
The early appearance of small red spots with blue-white centers inside the mouth, diagnostic of measles.
Korotkoff sounds
/kəˈrɒtkɒf saʊndz/
The sounds heard through a stethoscope when taking blood pressure.
Kosher diet
/ˈkoʊʃər ˈdaɪət/
Food prepared according to Jewish dietary laws; relevant for nutritional planning in healthcare.
Kostmann syndrome
/ˈkɒstmən ˈsɪndroʊm/
Severe congenital neutropenia, a rare condition where white blood cells are dangerously low.
Koyanagi-Harada syndrome
/koʊjəˈnɑːɡi həˈrɑːdə/
A multisystem disease involving the eyes, ears, and central nervous system.
Kozhevnikov's epilepsy
/koʊˈʒɛvnɪkɒvz ˈɛpɪlɛpsi/
A form of continuous partial epilepsy.
Kraepelinian
/ˌkreɪpəˈlɪniən/
Pertaining to Emil Kraepelin’s classification system for mental illness.
Kraft-Ebing
/ˈkræft ˈeɪbɪŋ/
Refers to the clinical study of psychopathology and sexual behavior.
Kranz anatomy
/krænz əˈnætəmi/
A specialized plant structure (sometimes discussed in pharmacology/botany) relating to photosynthesis.
Kreatine
/ˈkriːətiːn/
Variant spelling of creatine; a compound formed in protein metabolism.
Krukenberg spindle
/ˈkruːkənbɜːrɡ ˈspɪndəl/
A vertical pigment deposit on the posterior surface of the cornea, seen in pigment dispersion syndrome.
Krukenberg's arm
/ˈkruːkənbɜːrɡz ɑːrm/
A surgical procedure (cineplasty) that splits the forearm to create a pincer-like grip for amputees.
Krypton laser
/ˈkrɪptɒn ˈleɪzər/
A laser used in ophthalmology to treat retinal disorders.
Krypton laser photocoagulation
/ˈkrɪptɒn ˈleɪzər ˌfoʊtoʊkoʊˌæɡjʊˈleɪʃən/
A laser treatment used to seal leaking blood vessels in the retina.
Kugelberg-Welander disease
/ˈkuːɡəlbɜːrɡ vɛˈlændər/
A mild form of spinal muscular atrophy (Type III).
Kulchitsky cells
/kʊlˈtʃɪtski sɛlz/
Neuroendocrine cells found in the lining of the respiratory and gastrointestinal tracts.
Kummer's bone
/ˈkʊmərz boʊn/
An anatomical term for a sesamoid bone in some tendons.
Kunitz inhibitor
/ˈkuːnɪts ɪnˈhɪbɪtər/
A type of protein that acts as an enzyme inhibitor, specifically protease inhibitors.
Kupffer cell hyperplasia
/ˈkʊpfər sɛl ˌhaɪpərˈpleɪziə/
An increase in the number of macrophages in the liver, usually a response to infection.
Kuru
/ˈkuːruː/
A fatal brain disease caused by prions, historically found in New Guinea.
Kveim test
/kvaɪm tɛst/
A skin test used to help diagnose sarcoidosis.
Kyphoplasty
/ˈkaɪfoʊˌplæsti/
A surgical procedure used to treat a compression fracture of the vertebrae.
Kyphoplasty
/ˈkaɪfoʊˌplæsti/
A minimally invasive surgery used to treat vertebral compression fractures.
Kyphosis
/kaɪˈfoʊsɪs/
Excessive outward curvature of the spine, leading to a hunched back.