Chambers 21st Dictionary
Copyright Chambers Harrap Publishers Ltd 2007:
or (N Amer) ameba
noun (amoebae or amoebas) zool
any of numerous microscopic protozoan animals, including some disease-causing parasites, that inhabit water or damp soil and have no fixed shape, but move by continually pushing out pseudopodia (see pseudopodium) in different directions. amoebic or amebic adj.
ETYMOLOGY: 19c: from Greek amoibe change."http://www.chambersharrap.co.uk/chambers/feat...
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company.
n., pl. -bas also -bas, or -bae also -bae (-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. It moves by means of pseudopods.
[New Latin, genus name, from Greek amoibē, change, from ameibein, to change.]"http://www.answers.com/topic/amoeba
Online Medical Dictionary
Published at the Centre for Cancer Education, University of Newcastle upon Tyne
© Copyright 1997-2007 - The Centre for Cancer Education.
Genus of protozoa, but also an imprecise name given to several types of free living unicellular phagocytic organism.
Giant forms (e.g. Amoeba proteus) may be up to 2mm long and crawl over surfaces by protruding pseudopods (amoeboid movement). Amoebae exhibit great plasticity of form and conspicuous cytoplasmic streaming.
This entry appears with permission from the Dictionary of Cell and Molecular Biology (22 Feb 2008)"http://cancerweb.ncl.ac.uk/cgi-bin/omd?amoeba