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a combining form with the meanings “living substance,” “tissue,” “substance of a cell,” used in the formation of compound words:
endoplasm; neoplasm; cytoplasm.
Origin of -plasm
combining form representing Greek plásma. See plasma Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for -plasm


combining form
(in biology) indicating the material forming cells: protoplasm, cytoplasm
Derived Forms
-plasmic, combining_form:in_adjective
Word Origin
from Greek plasma something moulded; see plasma
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 -plasm

word-forming element meaning "a growth, a development; something molded," from Greek -plasma, from plasma "something molded or created" (see plasma).

Online Etymology Dictionary, © 2010 Douglas Harper
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-plasm in Medicine

-plasm suff.
Material forming cells or tissue: cytoplasm.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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