| actinozoan | (noun) sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed | Synonyms: anthozoan |
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| alprazolam | (noun) an antianxiety agent (trade name Xanax) of the benzodiazepine class | Synonyms: Xanax |
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| amazon | (noun) mainly green tropical American parrots | - |
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| (noun) a large strong and aggressive woman | Synonyms: virago |
| antherozoid | (noun) a motile male gamete of a plant such as an alga or fern or gymnosperm | Synonyms: spermatozoid |
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| anthozoan | (noun) sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed | Synonyms: actinozoan |
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| antiprotozoal | (noun) a medicinal drug used to fight diseases (like malaria) that are caused by protozoa | Synonyms: antiprotozoal drug |
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| azoimide | (noun) a colorless explosive liquid that is volatile and poisonous and foul-smelling | Synonyms: HN, hydrazoic acid, hydrogen azide |
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| azotaemia | (noun) accumulation in the blood of nitrogenous waste products (urea) that are usually excreted in the urine | Synonyms: azotemia, uraemia, uremia |
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| azote | (noun) an obsolete name for nitrogen | - |
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| azotemia | (noun) accumulation in the blood of nitrogenous waste products (urea) that are usually excreted in the urine | Synonyms: azotaemia, uraemia, uremia |
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| azoturia | (noun) excess of urea in the urine | - |
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| bazooka | (noun) a portable rocket launcher used by infantrymen as an antitank weapon | - |
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| benzoate | (noun) any salt or ester of benzoic acid | - |
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| benzocaine | (noun) a white crystalline ester used as a local anesthetic | Synonyms: ethyl aminobenzoate |
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| benzodiazepine | (noun) any of several similar lipophilic amines used as tranquilizers or sedatives or hypnotics or muscle relaxants; chronic use can lead to dependency | - |
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| benzofuran | (noun) a colorless oily compound extracted from coal tar and used in manufacturing synthetic resins | Synonyms: coumarone, cumarone |
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| benzoin | (noun) gum resin used especially in treating skin irritation | Synonyms: asa dulcis, benjamin, gum benjamin, gum benzoin |
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| benzol | (noun) a colorless liquid hydrocarbon; highly flammable; carcinogenic; the simplest of the aromatic compounds | Synonyms: benzene, benzine |
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| benzoquinone | (noun) any of a class of aromatic yellow compounds including several that are biologically important as coenzymes or acceptors or vitamins; used in making dyes | Synonyms: quinone |
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| blazon | (noun) the official symbols of a family, state, etc. | Synonyms: arms, blazonry, coat of arms |
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| blazonry | (noun) the official symbols of a family, state, etc. | Synonyms: arms, blazon, coat of arms |
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| borzoi | (noun) tall fast-moving dog breed | Synonyms: Russian wolfhound |
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| bozo | (noun) an informal term for a youth or man | Synonyms: cat, guy, hombre, sod |
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| (noun) a man who is a stupid incompetent fool | Synonyms: cuckoo, fathead, goof, goofball, goose, jackass, twat, zany |
| bryozoan | (noun) sessile aquatic animal forming mossy colonies of small polyps each having a curved or circular ridge bearing tentacles; attach to stones or seaweed and reproduce by budding | Synonyms: moss animal, polyzoan, sea mat, sea moss |
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| carrizo | (noun) tall North American reed having relative wide leaves and large plumelike panicles; widely distributed in moist areas; used for mats, screens and arrow shafts | Synonyms: common reed, ditch reed, Phragmites communis |
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| cefoperazone | (noun) a parenteral cephalosporin (trade name Cefobid) used for severe infections | Synonyms: Cefobid |
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| chorizo | (noun) a spicy Spanish pork sausage | - |
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| corozo | (noun) any of several tropical American palms bearing corozo nuts | Synonyms: corozo palm |
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| diazonium | (noun) the univalent cation R-N:N- (where R is an aromatic hydrocarbon); found in salts that are used in manufacturing azo dyes | - |
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| diazoxide | (noun) vasodilator (trade name Hyperstat) used to treat severe hypertension | Synonyms: Hyperstat |
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| doxazosin | (noun) an antihypertensive drug (trade name Cardura) that works by relaxing blood vessels so that blood passes through them more easily; it is also used to treat benign prostatic hyperplasia | Synonyms: Cardura |
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| ectozoan | (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoon, epizoan, epizoon |
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| ectozoon | (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoan, epizoan, epizoon |
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| endozoan | (noun) any of various parasites that live in the internal organs of animals (especially intestinal worms) | Synonyms: endoparasite, entoparasite, entozoan, entozoon |
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| entozoan | (noun) any of various parasites that live in the internal organs of animals (especially intestinal worms) | Synonyms: endoparasite, endozoan, entoparasite, entozoon |
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| entozoon | (noun) any of various parasites that live in the internal organs of animals (especially intestinal worms) | Synonyms: endoparasite, endozoan, entoparasite, entozoan |
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| epizoan | (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoan, ectozoon, epizoon |
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| epizoon | (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoan, ectozoon, epizoan |
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| estazolam | (noun) a frequently prescribed sleeping pill (trade name ProSom) | Synonyms: ProSom |
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| garbanzo | (noun) large white roundish Asiatic legume; usually dried | Synonyms: chickpea |
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| (noun) the seed of the chickpea plant | Synonyms: chickpea |
| ginzo | (noun) (ethnic slur) offensive term for a person of Italian descent | Synonyms: dago, greaseball, Guinea, wop |
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| gorgonzola | (noun) Italian blue cheese | - |
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| heliozoan | (noun) protozoa with spherical bodies and stiff radiating pseudopods | - |
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| horizon | (noun) the range of interest or activity that can be anticipated | Synonyms: purview, view |
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| (noun) the line at which the sky and Earth appear to meet | Synonyms: apparent horizon, sensible horizon, skyline, visible horizon |
| (noun) a specific layer or stratum of soil or subsoil in a vertical cross section of land | - |
| (noun) the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth | Synonyms: celestial horizon |
| horizontal | (noun) something that is oriented horizontally | - |
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| horizontality | (noun) the quality of being parallel to the horizon | - |
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| hydrazoite | (noun) a salt of hydrazoic acid | - |
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| hydrozoan | (noun) colonial coelenterates having the polyp phase dominant | Synonyms: hydroid |
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| imidazole | (noun) an organic base C3H4N2; a histamine inhibitor | Synonyms: glyoxaline, iminazole |
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| iminazole | (noun) an organic base C3H4N2; a histamine inhibitor | Synonyms: glyoxaline, imidazole |
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| intermezzo | (noun) a brief show (music or dance etc) inserted between the sections of a longer performance | Synonyms: entr'acte, interlude |
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| (noun) a short piece of instrumental music composed for performance between acts of a drama or opera | - |
| (noun) a short movement coming between the major sections of a symphony | - |
| itraconazole | (noun) an oral antifungal drug (trade name Sporanox) taken for cases of fungal nail disease | Synonyms: Sporanox |
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| kazoo | (noun) a toy wind instrument that has a membrane that makes a sound when you hum into the mouthpiece | - |
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| lansoprazole | (noun) antacid (trade name Prevacid) that suppresses acid secretion in the stomach | Synonyms: Prevacid |
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| leucocytozoan | (noun) parasitic in birds | Synonyms: leucocytozoon |
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| leucocytozoon | (noun) parasitic in birds | Synonyms: leucocytozoan |
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| matzo | (noun) brittle flat bread eaten at Passover | Synonyms: matzah, matzoh, unleavened bread |
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| matzoh | (noun) brittle flat bread eaten at Passover | Synonyms: matzah, matzo, unleavened bread |
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| mazopathy | (noun) any pathology of the breast | Synonyms: mastopathy |
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| mebendazole | (noun) an anthelmintic used to treat hookworm and pinworm and roundworm infestations | - |
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| merozoite | (noun) a cell that arises from the asexual division of a parent sporozoan during its life cycle | - |
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| mestizo | (noun) a person of mixed racial ancestry (especially mixed European and Native American ancestry) | - |
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| metazoan | (noun) any animal of the subkingdom Metazoa; all animals except protozoans and sponges | - |
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| metronidazole | (noun) antiprotozoal medication (trade name Flagyl) used to treat trichomoniasis and giardiasis | Synonyms: Flagyl |
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| mezzo | (noun) the female singing voice between contralto and soprano | Synonyms: mezzo-soprano |
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| (noun) a soprano with a voice between soprano and contralto | Synonyms: mezzo-soprano |
| mezzotint | (noun) print produced by an engraving that has been scraped to represent light or shade | - |
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| miconazole | (noun) an antifungal agent usually administered in the form of a nitrate (trade name Monistat) | Synonyms: Monistat |
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| midazolam | (noun) an injectable form of benzodiazepine (trade name Versed) useful for sedation and for reducing pain during uncomfortable medical procedures | Synonyms: Versed |
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| naphazoline | (noun) vasoconstrictor (trade names Privine and Sudafed) used in nasal sprays to treat symptoms of nasal congestion and in eyedrops to treat eye irritation | Synonyms: Privine, Sudafed |
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| nefazodone | (noun) an antidepressant drug (trade name Serzone) | Synonyms: Serzone |
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| omeprazole | (noun) antacid (trade name Prilosec) that suppresses acid secretion in the stomach | Synonyms: Prilosec |
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| orzo | (noun) pasta shaped like pearls of barley; frequently prepared with lamb in Greek cuisine | - |
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| ouzo | (noun) a Greek liquor flavored with anise | - |
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| oxyphenbutazone | (noun) an anti-inflammatory drug (trade name Tandearil) used to treat arthritis and bursitis | Synonyms: Tandearil |
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| ozocerite | (noun) a waxy mineral that is a mixture of hydrocarbons and occurs in association with petroleum; some varieties are used in making ceresin and candles | Synonyms: ader wax, earth wax, mineral wax, ozokerite |
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| ozokerite | (noun) a waxy mineral that is a mixture of hydrocarbons and occurs in association with petroleum; some varieties are used in making ceresin and candles | Synonyms: ader wax, earth wax, mineral wax, ozocerite |
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| ozone | (noun) a colorless gas (O3) soluble in alkalis and cold water; a strong oxidizing agent; can be produced by electric discharge in oxygen or by the action of ultraviolet radiation on oxygen in the stratosphere (where it acts as a screen for ultraviolet radiation) | - |
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| ozonide | (noun) any of a class of unstable chemical compounds resulting from the addition of ozone to a double bond in an unsaturated compound | - |
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| ozonosphere | (noun) a layer in the stratosphere (at approximately 20 miles) that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun | Synonyms: ozone layer |
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| palaeozoology | (noun) the study of fossil animals | Synonyms: paleozoology |
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| paleozoology | (noun) the study of fossil animals | Synonyms: palaeozoology |
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| paparazzo | (noun) a freelance photographer who pursues celebrities trying to take candid photographs of them to sell to newspapers or magazines | - |
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| parazoan | (noun) primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies | Synonyms: poriferan, sponge |
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| pentamethylenetetrazol | (noun) a drug used as a circulatory and respiratory stimulant; larger doses cause convulsions in shock therapy; Metrazol is a trademark | Synonyms: Metrazol, pentylenetetrazol |
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| pentazocine | (noun) analgesic drug (trade name Talwin) that is less addictive than morphine | Synonyms: Talwin |
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| pentylenetetrazol | (noun) a drug used as a circulatory and respiratory stimulant; larger doses cause convulsions in shock therapy; Metrazol is a trademark | Synonyms: Metrazol, pentamethylenetetrazol |
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| phenazopyridine | (noun) analgesic (trade name Pyridium) used to treat urinary tract infections | Synonyms: Pyridium |
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| phenylbutazone | (noun) anti-inflammatory drug (trade name Butazolidin) | Synonyms: Butazolidin |
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| piezoelectricity | (noun) electricity produced by mechanical pressure on certain crystals (notably quartz or Rochelle salt); alternatively, electrostatic stress produces a change in the linear dimensions of the crystal | Synonyms: piezo effect, piezoelectric effect |
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| piezometer | (noun) a measuring instrument for measuring high pressures | - |
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| podzol | (noun) a soil that develops in temperate to cold moist climates under coniferous or heath vegetation; an organic mat over a grey leached layer | Synonyms: podsol, podsol soil, podsolic soil, podzol soil |
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| polyzoa | (noun) marine or freshwater animals that form colonies of zooids | Synonyms: Bryozoa, phylum Bryozoa |
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| polyzoan | (noun) sessile aquatic animal forming mossy colonies of small polyps each having a curved or circular ridge bearing tentacles; attach to stones or seaweed and reproduce by budding | Synonyms: bryozoan, moss animal, sea mat, sea moss |
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| prazosin | (noun) antihypertensive drug (trade name Minipress) | Synonyms: Minipress |
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| protozoan | (noun) any of diverse minute acellular or unicellular organisms usually nonphotosynthetic | Synonyms: protozoon |
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| protozoologist | (noun) a zoologist who studies protozoans | - |
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| protozoology | (noun) the branch of zoology that studies protozoans | - |
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| protozoon | (noun) any of diverse minute acellular or unicellular organisms usually nonphotosynthetic | Synonyms: protozoan |
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| razor | (noun) edge tool used in shaving | - |
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| razorback | (noun) a mongrel hog with a thin body and long legs and a ridged back; a wild or semi-wild descendant of improved breeds; found chiefly in the southeastern United States | Synonyms: razorback hog, razorbacked hog |
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| (noun) any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small pointed dorsal fin | Synonyms: rorqual |