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Protozoa
10 dictionary results for: protozoa
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
Pro·to·zo·a 
[proh-tuh-zoh-uh] Pronunciation Key
[proh-tuh-zoh-uh] Pronunciation Key –noun
| a major grouping or superphylum of the kingdom Protista, comprising the protozoans. |
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
pro·to·zo·an
[proh-tuh-zoh-uhn] Pronunciation Key noun, plural -zo·ans, (especially collectively) -zo·a
[-zoh-uh] Pronunciation Key, adjective Biology
[proh-tuh-zoh-uhn] Pronunciation Key noun, plural -zo·ans, (especially collectively) -zo·a
[-zoh-uh] Pronunciation Key, adjective Biology –noun
–adjective
| 1. | any of a diverse group of eukaryotes, of the kingdom Protista, that are primarily unicellular, existing singly or aggregating into colonies, are usually nonphotosynthetic, and are often classified further into phyla according to their capacity for and means of motility, as by pseudopods, flagella, or cilia. |
| 2. | of, pertaining to, or characteristic of a protozoan. |
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
American Heritage Dictionary - Cite This Source - Share This
| pro·to·zo·an
(prō'tə-zō'ən) Pronunciation Key
n. pl. pro·to·zo·ans or pro·to·zo·a (-zō'ə) also pro·to·zo·ons Any of a large group of single-celled, usually microscopic, eukaryotic organisms, such as amoebas, ciliates, flagellates, and sporozoans. [From New Latin Protozōa, former subkingdom name : proto- + -zōa, pl. of -zōon, -zoon.] pro'to·zo'an, pro'to·zo'al, pro'to·zo'ic adj. |
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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Online Etymology Dictionary - Cite This Source - Share This
protozoa
protozoa
1834, from Mod.L., coined 1818 by Ger. zoologist Georg August Goldfuss (1782-1848) from Gk. protos "first" + zoia, pl. of zoion "animal" (see zoo).
Online Etymology Dictionary, © 2001 Douglas Harper
WordNet - Cite This Source - Share This
| protozoa | |
noun | |
| in some classifications considered a superphylum or a subkingdom; comprises flagellates; ciliates; sporozoans; amoebas; foraminifers |
WordNet® 3.0, © 2006 by Princeton University.
The American Heritage Science Dictionary - Cite This Source - Share This
| protozoan
(prō'tə-zō'ən) Pronunciation Key
Plural protozoans or protozoa
Any of a large group of one-celled organisms (called protists) that live in water or as parasites. Many protozoans move about by means of appendages known as cilia or flagella. Protozoans include the amoebas, flagellates, foraminiferans, and ciliates. Their traditional classification as the subkingdom Protozoa is still used for convenience, but it is now known that protozoans represent several evolutionarily distinct groups. See more at protist.
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The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
American Heritage New Dictionary of Cultural Literacy, Third Edition - Cite This Source - Share This
protozoa [(proh-tuh-zoh-uh)]
protozoa [(proh-tuh-zoh-uh)]
Single-celled animals, such as amoebas, that are the most primitive form of animal life. In modern biology, they are classified in the kingdom of Protoctista rather than in the animal kingdom. (See Linnean classification.)
Note: Some protozoa are parasites and may be pathogenic, causing diseases such as malaria and dysentery.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
American Heritage Stedman's Medical Dictionary - Cite This Source - Share This
protozoa pro·to·zo·a (prō'tə-zō'ə)
n.
Plural of protozoan.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Webster's Revised Unabridged Dictionary - Cite This Source - Share This
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.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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