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ameba

or a·moe·ba

[ uh-mee-buh ]
/ əˈmi bə /
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noun, plural a·me·bas, a·me·bae [uh-mee-bee]. /əˈmi bi/.

any of numerous freshwater, marine, or parasitic one-celled protozoa of the order Amoebida, characterized by a granular nucleus surrounded by a jellylike mass of cytoplasm that forms temporary extensions, or pseudopodia, by which the organism moves, engulfs food particles, and forms food vacuoles.
a protozoan of the genus Amoeba, inhabiting bottom vegetation of freshwater ponds and streams: used widely in laboratory studies.

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Origin of ameba

From New Latin amoeba, from Greek amoibḗ “change, alternation,”, akin to ameíbein “to exchange”

OTHER WORDS FROM ameba

a·me·ba·like, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for ameba

ameba
/ (əˈmiːbə) /

noun plural -bae (-biː) or -bas

the usual US spelling of amoeba

Derived forms of ameba

amebic, adjective
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

Medical definitions for ameba

ameba

n. pl. a•me•bas

A protozoa of the genus Amoeba and of related genera, occurring in soil and water and parasitic in animals.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for ameba

ameba
[ ə-mēbə ]

Another spelling of amoeba.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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