trophozoite

trophozoite
The ameboid, vegetative, asexual form of certain Sporozoea, such as the schizont of the plasmodia of malaria and related parasites. [tropho- + G. zoon, animal]

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tro·pho·zo·ite .trō-fə-'zō-.īt n a protozoan of a vegetative form as distinguished from one of a reproductive or resting form

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n.
a stage in the life cycle of the malarial parasite (Plasmodium) that develops from a merozoite in the red blood cells. The trophozoite, which has a ring-shaped body and a single nucleus, grows steadily at the expense of the blood cell; eventually its nucleus and cytoplasm undergo division to form a schizont containing many merozoites.

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tro·pho·zo·ite (tro″fo-zoґīt) [tropho- + Gr. zōon animal] the active, motile, feeding stage of protozoa, as contrasted with the nonmotile encysted stage. In the malarial parasite, this is the stage between the merozoite and the mature schizont. Trophozoites of Toxoplasma gondii (tachyzoites) are found in the tissues during the acute stage of toxoplasmosis. Cf. trophont.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Trophozoite — Trophozoïte Un trophozoïte (du grec trope, alimentation zôon, animal) est l’étape d alimentation active dans le cycle de vie des parasites protozoaires tel le Plasmodium responsable de la malaria (l opposé de l état de trophozoïte est la forme à… …   Wikipédia en Français

  • trophozoite — [träf΄ə zō′īt΄] n. [ TROPHO + ZO + ITE1] a protozoan, esp. of certain parasitic species, in the feeding and growing stage in contrast with the reproductive and infective stages …   English World dictionary

  • Trophozoite — A trophozoite (G. trope , nourishment + zoon , animal) is the activated, feeding stage in the life cycle of protozoan parasites such as the malaria causing Plasmodium falciparum (the opposite of the trophozoite state is the thick walled cyst… …   Wikipedia

  • Trophozoïte — Un trophozoïte (du grec trophê, nourriture zôon, animal) est l’étape d alimentation active dans le cycle de vie des parasites protozoaires tel le Plasmodium responsable de la malaria (l opposé de l état de trophozoïte est la forme à parois… …   Wikipédia en Français

  • trophozoite — n. a stage in the life cycle of the malarial parasite (Plasmodium) that develops from a merozoite in the red blood cells. The trophozoite, which has a ring shaped body and a single nucleus, grows steadily at the expense of the blood cell;… …   The new mediacal dictionary

  • trophozoite — noun Etymology: troph + zo + 1 ite Date: circa 1909 a protozoan of a vegetative form as distinguished from one of a reproductive or resting form …   New Collegiate Dictionary

  • trophozoite — (trof o zo aīt) The active, motile feeding stage of a protozoan organism; in the malarial parasite, the stage of schizogony between the ring stage and the schizont …   Dictionary of microbiology

  • trophozoite — The feeding stage of a protozoan (as distinct from reproductive or encysted stages) …   Dictionary of molecular biology

  • trophozoite — /trof euh zoh uyt, troh feuh /, n. Zool. a protozoan in the metabolically active growth stage. [1905 10; TROPHO + ZO(ON) + ITE1] * * * …   Universalium

  • trophozoite — noun A protozoan in the feeding stage of its life cycle …   Wiktionary

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