| hyacinth | (noun) any of numerous bulbous perennial herbs | - |
|---|
| (noun) a red transparent variety of zircon used as a gemstone | Synonyms: jacinth |
| hyaena | (noun) doglike nocturnal mammal of Africa and southern Asia that feeds chiefly on carrion | Synonyms: hyena |
|---|
| hyalin | (noun) a glassy translucent substance that occurs in hyaline cartilage or in certain skin conditions | Synonyms: hyaline |
|---|
| hyaline | (adjective) resembling glass in transparency or translucency | Synonyms: hyaloid |
|---|
| (noun) a glassy translucent substance that occurs in hyaline cartilage or in certain skin conditions | Synonyms: hyalin |
| hyalinisation | (noun) the state of being hyaline or having become hyaline | Synonyms: hyalinization |
|---|
| hyalinization | (noun) the state of being hyaline or having become hyaline | Synonyms: hyalinisation |
|---|
| hyaloid | (adjective) resembling glass in transparency or translucency | Synonyms: hyaline |
|---|
| (noun) the transparent membrane enveloping the vitreous humor of the eye and separating it from the retina | Synonyms: hyaloid membrane |
| hyaloplasm | (noun) the clear nongranular portion of the cytoplasm of a cell | Synonyms: ground substance |
|---|
| hyaloplasmic | (adjective) of or relating to hyaloplasm | - |
|---|
| hyaluronidase | (noun) an enzyme (trade name Hyazyme) that splits hyaluronic acid and so lowers its viscosity and increases the permeability of connective tissue and the absorption of fluids | Synonyms: Hyazyme, spreading factor |
|---|
| hybrid | (adjective) produced by crossbreeding | Synonyms: intercrossed |
|---|
| (noun) (genetics) an organism that is the offspring of genetically dissimilar parents or stock; especially offspring produced by breeding plants or animals of different varieties or breeds or species | Synonyms: cross, crossbreed |
| (noun) a car which runs on two power sources, usually an internal combustion engine and an electronic motor | Synonyms: hybrid car |
| (noun) a composite of mixed origin | - |
| (noun) a word that is composed of parts from different languages (e.g., `monolingual' has a Greek prefix and a Latin root) | Synonyms: loan-blend, loanblend |
| hybridisation | (noun) (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids | Synonyms: cross, crossbreeding, crossing, hybridization, hybridizing, interbreeding |
|---|
| hybridise | (verb) breed animals or plants using parents of different races and varieties | Synonyms: cross, crossbreed, hybridize, interbreed |
|---|
| hybridization | (noun) (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids | Synonyms: cross, crossbreeding, crossing, hybridisation, hybridizing, interbreeding |
|---|
| hybridize | (verb) breed animals or plants using parents of different races and varieties | Synonyms: cross, crossbreed, hybridise, interbreed |
|---|
| hybridizing | (noun) (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids | Synonyms: cross, crossbreeding, crossing, hybridisation, hybridization, interbreeding |
|---|
| hybridoma | (noun) a hybrid cell resulting from the fusion of a lymphocyte and a tumor cell; used to culture a specific monoclonal antibody | - |
|---|
| hydantoin | (noun) any of a group of anticonvulsant drugs used in treating epilepsy | - |
|---|
| hydathode | (noun) a pore that exudes water on the surface or margin of a leaf of higher plants | Synonyms: water pore, water stoma |
|---|
| hydatid | (noun) cyst filled with liquid; forms as a result of infestation by tapeworm larvae (as in echinococcosis) | - |
|---|
| hydatidosis | (noun) infestation with larval echinococci (tapeworms) | Synonyms: echinococcosis, hydatid disease |
|---|
| hydra | (noun) small tubular solitary freshwater hydrozoan polyp | - |
|---|
| (noun) trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality | - |
| hydralazine | (noun) an antihypertensive drug (trade name Apresoline) that dilates blood vessels; used (often with a diuretic) to treat hypertension and congestive heart failure | Synonyms: Apresoline |
|---|
| hydramnios | (noun) an abnormality of pregnancy; accumulation of excess amniotic fluid | - |
|---|
| hydrangea | (noun) any of various deciduous or evergreen shrubs of the genus Hydrangea | - |
|---|
| hydrant | (noun) a discharge pipe with a valve and spout at which water may be drawn from the mains of waterworks | - |
|---|
| (noun) a faucet for drawing water from a pipe or cask | Synonyms: tap, water faucet, water tap |
| hydrargyrum | (noun) a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures | Synonyms: atomic number 80, Hg, mercury, quicksilver |
|---|
| hydrarthrosis | (noun) inflammation and swelling of a movable joint because of excess synovial fluid | - |
|---|
| hydrate | (noun) any compound that contains water of crystallization | - |
|---|
| (verb) cause to be hydrated; add water or moisture to | - |
| (verb) become hydrated and combine with water | - |
| (verb) supply water or liquid to in order to maintain a healthy balance | - |
| hydrated | (adjective) containing combined water (especially water of crystallization as in a hydrate) | Synonyms: hydrous |
|---|
| hydration | (noun) the process of combining with water; usually reversible | - |
|---|
| hydraulic | (adjective) of or relating to the study of hydraulics | - |
|---|
| (adjective) moved or operated or effected by liquid (water or oil) | - |
| hydraulically | (adverb) in a hydraulic manner | Synonyms: hydraulicly |
|---|
| hydraulicly | (adverb) in a hydraulic manner | Synonyms: hydraulically |
|---|
| hydraulics | (noun) study of the mechanics of fluids | Synonyms: fluid mechanics |
|---|
| hydrazide | (noun) any of a class of organic compounds sharing a common functional group characterized by a nitrogen to nitrogen covalent bond with 4 substituents with at least one of them being an acyl group. | - |
|---|
| hydrazine | (noun) a colorless fuming corrosive liquid; a powerful reducing agent; used chiefly in rocket fuels | - |
|---|
| hydrazoite | (noun) a salt of hydrazoic acid | - |
|---|
| hydremia | (noun) blood disorder in which there is excess fluid volume compared with the cell volume of the blood | - |
|---|
| hydric | (adjective) having or characterized by excessive moisture | - |
|---|
| hydride | (noun) any binary compound formed by the union of hydrogen and other elements | - |
|---|
| hydrilla | (noun) submersed plant with whorled lanceolate leaves and solitary axillary flowers; Old World plant naturalized in southern United States and clogging Florida's waterways | Synonyms: Hydrilla verticillata |
|---|
| hydrocarbon | (noun) an organic compound containing only carbon and hydrogen | - |
|---|
| hydrocele | (noun) disorder in which serous fluid accumulates in a body sac (especially in the scrotum) | - |
|---|
| hydrocephalic | (adjective) relating to or characterized by or evidencing hydrocephalus | - |
|---|
| hydrocephalus | (noun) an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain; in infants it can cause abnormally rapid growth of the head and bulging fontanelles and a small face; in adults the symptoms are primarily neurological | Synonyms: hydrocephaly |
|---|
| hydrocephaly | (noun) an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain; in infants it can cause abnormally rapid growth of the head and bulging fontanelles and a small face; in adults the symptoms are primarily neurological | Synonyms: hydrocephalus |
|---|
| hydrochloride | (noun) a complex consisting of an organic base in association with hydrogen chloride | - |
|---|
| hydrochlorofluorocarbon | (noun) a fluorocarbon that is replacing chlorofluorocarbon as a refrigerant and propellant in aerosol cans; considered to be somewhat less destructive to the atmosphere | Synonyms: HCFC |
|---|
| hydrochlorothiazide | (noun) a diuretic drug (trade name Microzide, Esidrix, and HydroDIURIL) used in the treatment of hypertension | Synonyms: Esidrix, HydroDIURIL, Microzide |
|---|
| hydrocolloid | (noun) a substance that forms a gel with water | - |
|---|
| hydrocortisone | (noun) an adrenal-cortex hormone (trade names Hydrocortone or Cortef) that is active in carbohydrate and protein metabolism | Synonyms: Cortef, cortisol, Hydrocortone |
|---|
| hydrocracking | (noun) the process whereby hydrocarbon molecules of petroleum are broken down into kerosene and gasolene by the addition of hydrogen under high pressure in the presence of a catalyst | - |
|---|
| hydrodynamic | (adjective) of or relating to hydrodynamics | - |
|---|
| hydrodynamics | (noun) study of fluids in motion | Synonyms: hydrokinetics |
|---|
| hydroelectric | (adjective) of or relating to or used in the production of electricity by waterpower | - |
|---|
| hydroelectricity | (noun) electricity produced by water power | - |
|---|
| hydroflumethiazide | (noun) diuretic used to treat hypertension and edema | - |
|---|
| hydrofluorocarbon | (noun) a fluorocarbon emitted as a by-product of industrial manufacturing | Synonyms: HFC |
|---|
| hydrofoil | (noun) a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds | Synonyms: hydroplane |
|---|
| (noun) a device consisting of a flat or curved piece (as a metal plate) so that its surface reacts to the water it is passing through | Synonyms: foil |
| hydrogel | (noun) a colloidal gel in which water is the dispersion medium | - |
|---|
| hydrogen | (noun) a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe | Synonyms: atomic number 1, H |
|---|
| hydrogenate | (verb) combine or treat with or expose to hydrogen; add hydrogen to the molecule of (an unsaturated organic compound) | - |
|---|
| hydrogenation | (noun) a chemical process that adds hydrogen atoms to an unsaturated oil | - |
|---|
| hydrographic | (adjective) of or relating to the science of hydrography | Synonyms: hydrographical |
|---|
| hydrographical | (adjective) of or relating to the science of hydrography | Synonyms: hydrographic |
|---|
| hydrography | (noun) the science of the measurement and description and mapping of the surface waters of the earth with special reference to navigation | - |
|---|
| hydroid | (noun) colonial coelenterates having the polyp phase dominant | Synonyms: hydrozoan |
|---|
| hydroisohypse | (noun) a line on a map connecting points of equal level on the piezometric surface. | - |
|---|
| hydroisopieze | (noun) a line on a map connecting points of identical pressures in the water bearing stratum. | - |
|---|
| hydrokinetic | (adjective) relating to fluids in motion or the forces that produce or affect such motion | - |
|---|
| hydrokinetics | (noun) study of fluids in motion | Synonyms: hydrodynamics |
|---|
| hydrolise | (verb) make a compound react with water and undergo hydrolysis | Synonyms: hydrolize |
|---|
| hydrolith | (noun) a saltlike binary compound (CaH2) used as a reducing agent and source of hydrogen | Synonyms: calcium hydride |
|---|
| hydrolize | (verb) make a compound react with water and undergo hydrolysis | Synonyms: hydrolise |
|---|
| hydrologist | (noun) a geologist skilled in hydrology | - |
|---|
| hydrology | (noun) the branch of geology that studies water on the earth and in the atmosphere: its distribution and uses and conservation | - |
|---|
| hydrolysate | (noun) a product of hydrolysis | - |
|---|
| hydrolyse | (verb) undergo hydrolysis; decompose by reacting with water | Synonyms: hydrolyze |
|---|
| hydrolysis | (noun) a chemical reaction in which water reacts with a compound to produce other compounds; involves the splitting of a bond and the addition of the hydrogen cation and the hydroxide anion from the water | - |
|---|
| hydrolyzable | (adjective) capable of undergoing hydrolysis | - |
|---|
| hydrolyze | (verb) undergo hydrolysis; decompose by reacting with water | Synonyms: hydrolyse |
|---|
| hydromancer | (noun) one who practices hydromancy | - |
|---|
| hydromancy | (noun) divination by water (as by patterns seen in the ebb and flow of the tides) | - |
|---|
| hydromel | (noun) honey diluted in water; becomes mead when fermented | - |
|---|
| hydrometer | (noun) a measuring instrument for determining the specific gravity of a liquid or solid | Synonyms: gravimeter |
|---|
| hydrometric | (adjective) of or relating to hydrometry | Synonyms: gravimetric |
|---|
| hydrometry | (noun) the measurement of specific gravity | Synonyms: gravimetry |
|---|
| hydromorphone | (noun) a narcotic analgesic (trade name Dilaudid) used to treat moderate to severe pain | Synonyms: Dilaudid, hydromorphone hydrochloride |
|---|
| hydronephrosis | (noun) accumulation of urine in the kidney because of an obstruction in the ureter | - |
|---|
| hydropathic | (adjective) of or relating to hydropathy or its administration | - |
|---|
| hydropathy | (noun) the internal and external use of water in the treatment of disease | Synonyms: hydrotherapy |
|---|
| hydrophilic | (adjective) having a strong affinity for water; tending to dissolve in, mix with, or be wetted by water | - |
|---|
| hydrophobia | (noun) an acute viral disease of the nervous system of warm-blooded animals (usually transmitted by the bite of a rabid animal); rabies is fatal if the virus reaches the brain | Synonyms: lyssa, madness, rabies |
|---|
| (noun) a morbid fear of water | - |
| (noun) a symptom of rabies in humans consisting of an aversion to swallowing liquids | - |
| hydrophobic | (adjective) lacking affinity for water; tending to repel and not absorb water; tending not to dissolve in or mix with or be wetted by water | - |
|---|
| (adjective) abnormally afraid of water | Synonyms: aquaphobic |
| hydrophobicity | (noun) the property of being water-repellent; tending to repel and not absorb water | - |
|---|
| hydrophyte | (noun) a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth | Synonyms: aquatic plant, hydrophytic plant, water plant |
|---|
| hydrophytic | (adjective) growing wholly or partially in water | - |
|---|
| hydroplane | (noun) an airplane that can land on or take off from water | Synonyms: seaplane |
|---|
| (noun) a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds | Synonyms: hydrofoil |
| (verb) glide on the water in a hydroplane | Synonyms: seaplane |
| hydroponic | (adjective) of or relating to aquiculture | Synonyms: aquacultural, aquicultural |
|---|