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Protozoa - Dictionary Definition and Overview |
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Protozoa : (noun)
1: in some classifications considered a superphylum or a
subkingdom; comprises flagellates; ciliates; sporozoans;
amoebas; foraminifers [syn: Protozoa, phylum Protozoa]
Based on WordNet 2.0
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Protozoon \Pro`to*zo"["o]n\ (-[o^]n), n.; pl. Protozoa. [NL.]
(Zo["o]l.)
(a) One of the Protozoa.
(b) A single zooid of a compound protozoan.
Based on Webster's Revised Unabridged Dictionary
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Protozoa : \Pro`to*zo"a\, n. pl. [NL., fr. Gr. ? first _ ? an
animal.] (Zo["o]l.)
The lowest of the grand divisions of the animal kingdom.
Note: The entire animal consists of a single cell which is
variously modified; but in many species a number of
these simple zooids are united together so as to form a
compound body or organism, as in the Foraminifera and
Vorticell[ae]. The reproduction takes place by fission,
or by the breaking up of the contents of the body after
encystment, each portion becoming a distinct animal, or
in other ways, but never by true eggs. The principal
divisions are Rhizopoda, Gregarin[ae], and Infusoria.
See also Foraminifera, Heliozoa, Protoplasta,
Radiolaria, Flagellata, Ciliata.
Based on Webster's Revised Unabridged Dictionary
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Protozoa : Protozoa: A single-cell organism that can only divide within a host organism. Malaria is caused by a protozoa: Plasmodium. Other protozoan parasites Giardia and Toxoplasma.
Based on Webster's Revised Unabridged Dictionary (1913)
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