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amoeba

[uh-mee-buh] /əˈmi bə/
noun, plural amoebas, amoebae
[uh-mee-bee] /əˈmi bi/ (Show IPA)
1.

ameba

or amoeba

[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.
Origin of ameba
< 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. 2015.
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British Dictionary definitions for amoeba

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

ameba

/əˈmiːbə/
noun (pl) -bae (-biː), -bas
1.
the usual US spelling of amoeba
Derived Forms
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
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Word Origin and History for amoeba
n.

1855, from Modern Latin Amoeba, genus name (1841), from Greek amoibe "change," related to ameibein "to change, exchange," from PIE *e-meigw-, extended form of root *mei- "to change, go, move" (see mutable). So called for its constantly changing shape. Related: Amoebaean; amoebic.

Online Etymology Dictionary, © 2010 Douglas Harper
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amoeba in Medicine

amoeba a·moe·ba (ə-mē'bə)
n.
Variant of ameba.

Amoeba A·moe·ba (ə-mē'bə)
n. pl. a·moe·bas or a·moe·bae (-bē)

  1. A genus of protozoa of the class Sarcodina or Rhizopoda.

  2. Any of several genera of protozoa that are parasitic in humans, especially Entamoeba.

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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amoeba in Science
amoeba
  (ə-mē'bə)   
Plural amoebas or amoebae (ə-mē'bē)
Any of various one-celled aquatic or parasitic protozoans of the genus Amoeba or related genera, having no definite form and consisting of a mass of protoplasm containing one or more nuclei surrounded by a flexible outer membrane. Amoebas move by means of pseudopods.
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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amoeba in Culture
amoeba [(uh-mee-buh)]

An animal composed of only one cell that has no fixed shape. It is the best known of the single-celled animals, or protozoa.

Note: The term amoeba is sometimes used to refer to something with an indefinite, changeable shape.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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amoeba in Technology

1. A distributed operating system developed by Andrew S. Tanenbaum and others of Vrije Universiteit, Amsterdam. Amoeba is only available under licence from the VUA, but is free of charge and includes all source, binaries and documentation.
(http://am.cs.vu.nl/).
[Features?]
2. A derogatory term for Commodore's Amiga personal computer.
[Jargon File]
(1997-05-07)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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