| actinozoan | (noun) sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed | Synonyms: anthozoan |
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| 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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| archaeozoic | (adjective) of or belonging to earlier of two divisions of the Precambrian era | Synonyms: archeozoic |
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| archeozoic | (adjective) of or belonging to earlier of two divisions of the Precambrian era | Synonyms: archaeozoic |
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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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| corozo | (noun) any of several tropical American palms bearing corozo nuts | Synonyms: corozo palm |
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| ectozoan | (adjective) of or relating to epizoa | Synonyms: epizoan |
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| (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoon, epizoan, epizoon |
| ectozoon | (noun) any external parasitic organism (as fleas) | Synonyms: ectoparasite, ectozoan, epizoan, epizoon |
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| endozoan | (adjective) of or relating to entozoa | Synonyms: entozoan |
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| (noun) any of various parasites that live in the internal organs of animals (especially intestinal worms) | Synonyms: endoparasite, entoparasite, entozoan, entozoon |
| endozoic | (adjective) living within a living animal usually as a parasite | Synonyms: entozoan, entozoic |
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| entozoan | (adjective) living within a living animal usually as a parasite | Synonyms: endozoic, entozoic |
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| (adjective) of or relating to entozoa | Synonyms: endozoan |
| (noun) any of various parasites that live in the internal organs of animals (especially intestinal worms) | Synonyms: endoparasite, endozoan, entoparasite, entozoon |
| entozoic | (adjective) living within a living animal usually as a parasite | Synonyms: endozoic, entozoan |
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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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| heliozoan | (noun) protozoa with spherical bodies and stiff radiating pseudopods | - |
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| holozoic | (adjective) obtaining nourishment as animals do by ingesting complex organic matter | - |
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| hydrozoan | (noun) colonial coelenterates having the polyp phase dominant | Synonyms: hydroid |
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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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| merozoite | (noun) a cell that arises from the asexual division of a parent sporozoan during its life cycle | - |
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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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| ozonise | (verb) convert (oxygen) into ozone | Synonyms: ozonize |
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| ozonize | (verb) convert (oxygen) into ozone | Synonyms: ozonise |
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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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| proterozoic | (adjective) formed in the later of two divisions of the Precambrian era | - |
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| protozoal | (adjective) of or relating to the Protozoa | Synonyms: protozoan, protozoic |
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| protozoan | (adjective) of or relating to the Protozoa | Synonyms: protozoal, protozoic |
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| (noun) any of diverse minute acellular or unicellular organisms usually nonphotosynthetic | Synonyms: protozoon |
| protozoic | (adjective) of or relating to the Protozoa | Synonyms: protozoal, protozoan |
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| protozoological | (adjective) concerning the branch of zoology that studies protozoans | - |
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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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| rebozo | (noun) a long woolen or linen scarf covering the head and shoulders (also used as a sling for holding a baby); traditionally worn by Latin-American women | - |
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| saprozoic | (adjective) (of certain animals) feeding on dead or decaying animal matter | Synonyms: saprophagous |
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| scyphozoan | (noun) any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle | - |
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| spermatozoan | (noun) the male reproductive cell; the male gamete | Synonyms: sperm, sperm cell, spermatozoon |
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| spermatozoid | (noun) a motile male gamete of a plant such as an alga or fern or gymnosperm | Synonyms: antherozoid |
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| spermatozoon | (noun) the male reproductive cell; the male gamete | Synonyms: sperm, sperm cell, spermatozoan |
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| sporozoan | (noun) parasitic spore-forming protozoan | - |
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| sporozoite | (noun) one of the minute active bodies into which sporozoans divide in one stage of their life cycle | - |
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| trophozoite | (noun) a sporozoan in the active feeding stage of its life cycle | - |
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