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ameba

[uh-mee-buh] /əˈmi bə/
noun, plural amebas, amebae
[uh-mee-bee] /əˈmi bi/ (Show IPA)
1.
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.
2.
a protozoan of the genus Amoeba, inhabiting bottom vegetation of freshwater ponds and streams: used widely in laboratory studies.
Also, amoeba.
Origin
< New Latin amoeba < Greek amoibḗ change, alternation, akin to ameíbein to exchange
Related forms
amebalike, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ameba

ameba

/əˈmiːbə/
noun (pl) -bae (-biː), -bas
1.
the usual US spelling of amoeba
Derived Forms
amebic, adjective

amoeba

/əˈmiːbə/
noun (pl) -bae (-biː), -bas
1.
any protozoan of the phylum Rhizopoda, esp any of the genus Amoeba, able to change shape because of the movements of cell processes (pseudopodia). They live in fresh water or soil or as parasites in man and animals
Derived Forms
amoebic, (US) amebic, adjective
Word Origin
C19: from New Latin, from Greek amoibē change, from ameibein to change, exchange
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
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ameba in Medicine

ameba a·me·ba or amoeba (ə-mē'bə)
n. pl. a·me·bas or a·me·bae (-bē)
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.
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ameba in Science
ameba
  (ə-mē'bə)   
Another spelling of amoeba.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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