Half-life
/ˈhæfˌlaɪf/
Time for drug concentration to decrease by half.
Hallucinogen
/həˈluːsɪnədʒən/
A drug that causes hallucinations.
Hematemesis
/ˌhiːməˈtɛməsɪs/
The vomiting of blood.
Hematopoietic
/hiːˌmætoʊpɔɪˈɛtɪk/
Pertaining to the formation of blood cells.
Hemolysis
/hiːˈmɒlɪsɪs/
Rupture or destruction of red blood cells.
Hemostasis
/ˌhiːmoʊˈsteɪsɪs/
The stopping of a flow of blood.
Hepatic
/hɪˈpætɪk/
Relating to the liver.
Hepatotoxicity
/ˌhɛpətoʊtɒkˈsɪsɪti/
Damage to the liver caused by a substance.
Hirsutism
/ˈhɜːrsjuːtɪzəm/
Abnormal growth of body hair.
Histamine
/ˈhɪstəmiːn/
Compound released during allergic reactions.
Homeostasis
/ˌhoʊmioʊˈsteɪsɪs/
Stable equilibrium between physiological processes.
Hormone
/ˈhɔːrmoʊn/
Regulatory substance stimulating specific cells.
Hydragogue
/ˈhaɪdrəɡɒɡ/
Purgative causing watery discharge from bowels.
Hydrophilic
/ˌhaɪdrəˈfɪlɪk/
Having a tendency to dissolve in water.
Hypercalcemia
/ˌhaɪpərkælˈsiːmiə/
Calcium level in blood above normal.
Hyperglycemia
/ˌhaɪpərɡlaɪˈsiːmiə/
Excess glucose in the bloodstream.
Hyperkalemia
/ˌhaɪpərkəˈliːmiə/
Higher than normal potassium level.
Hypersensitivity
/ˌhaɪpərˌsɛnsɪˈtɪvɪti/
Undesirable immune system reactions.
Hypertension
/ˌhaɪpərˈtɛnʃən/
Abnormally high blood pressure.
Hypnotic
/hɪpˈnɒtɪk/
A sleep-inducing drug.
Hypoglycemia
/ˌhaɪpoʊɡlaɪˈsiːmiə/
Deficiency of glucose in the bloodstream.
Hypotension
/ˌhaɪpoʊˈtɛnʃən/
Abnormally low blood pressure.