Also found in: Medical.


 (sō-măt′ə-plăz′əm, sō′mə-tə-)
1. The entirety of protoplasm, other than the germplasm, constituting the body.
2. The protoplasm of a somatic cell.

so′ma·to·plas′tic (sō′mə-tə-plăs′tĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biology) biology
a. the protoplasm of a somatic cell
b. the somatic cells collectively. Compare germplasm
ˌsomatoˈplastic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
What we now loosely call `neo-Darwinism' was born a century ago in August Weismann's separation of somatoplasm from germ plasm.
August Weismann founded neo-Darwinism by demonstrating the continuity of the germ plasm and the derivative nature of the somatoplasm. This enormous accomplishment led, however, to an artificial division of organisms into `genotypes' and `phenotypes', and to the idea that genotypes were both logically and ontologically prior to phenotypes.