protozoan

protozoan definition - medical

pro·to·zo·an (prōˌtə-zōˈən) or pro·to·zo·on (-ŏnˌ)

noun pl. pro·to·zo·a (-zōˈə) or pro·to·zo·ans or pro·to·zo·ons
Any of a group of single-celled, usually microscopic, eukaryotic organisms, such as amoebas, ciliates, flagellates, and sporozoans.

Related Forms:

  • proˌto·zoˈan, proˌto·zoˈal , proˌto·zoˈic adjective

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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