follow Dictionary.com

Stories We Like: Novels For Language Lovers

protozoan

[proh-tuh-zoh-uh n] /ˌproʊ təˈzoʊ ən/
noun, plural protozoans (especially collectively) protozoa
[proh-tuh-zoh-uh] /ˌproʊ təˈzoʊ ə/ (Show IPA)
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.
adjective
2.
of, pertaining to, or characteristic of a protozoan.
Origin
1860-1865
1860-65; Protozo(a) + -an
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for protozoans
  • The presence of particular types of protozoans is related to effluent quality and plant performance.
  • No other parasitic protozoans have been reported to have such a capability.
British Dictionary definitions for protozoans

protozoan

/ˌprəʊtəˈzəʊən/
noun (pl) -zoa (-ˈzəʊə), -zoans
1.
Also called protozoon (ˌprəʊtəˈzəʊɒn), (pl) -zoa. any of various minute unicellular organisms formerly regarded as invertebrates of the phylum Protozoa but now usually classified in certain phyla of protoctists. Protozoans include flagellates, ciliates, sporozoans, amoebas, and foraminifers
adjective
2.
of or relating to protozoans
Word Origin
C19: via New Latin from Greek proto- + zoion animal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
protozoans in Medicine

protozoan pro·to·zo·an (prō'tə-zō'ən) or pro·to·zo·on (-ŏn')
n. pl. pro·to·zo·a (-zō'ə) or pro·to·zo·ans or pro·to·zo·a or pro·to·zo·ons
Any of a group of single-celled, usually microscopic, eukaryotic organisms, such as amoebas, ciliates, flagellates, and sporozoans.


pro'to·zo'an or pro'to·zo'al or pro'to·zo'ic adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
protozoans in Science
protozoan
  (prō'tə-zō'ən)   
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for protozoan

Most English speakers likely know this word

Word Value for protozoans

21
23
Scrabble Words With Friends