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[suh-mat-uh-plaz-uh m, soh-muh-tuh-] /səˈmæt əˌplæz əm, ˈsoʊ mə tə-/
noun, Cell Biology
the cytoplasm of a somatic cell, especially as distinguished from germ plasm.
Origin of somatoplasm
Related forms
somatoplastic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for somatoplasm
Historical Examples
  • In these higher animals this protoplasm is known as germplasm, that in body cells as somatoplasm.

    Taboo and Genetics Melvin Moses Knight, Iva Lowther Peters, and Phyllis Mary Blanchard
  • The somatoplasm arises from, and hence must be regarded as a modification of, the germ-plasm.

  • The germ-plasm can increase indefinitely in the lapse of generations, increase of the somatoplasm is limited.

  • The somatoplasm can only in the most general way affect the self-perpetuating, close corporation of the germ-plasm.

  • The process of changing germ-plasm into somatoplasm is one of disintegration.

  • From this point of view every individual consists of only two parts,—germ-plasm and soma or somatoplasm.

    Applied Eugenics Paul Popenoe and Roswell Hill Johnson
British Dictionary definitions for somatoplasm


  1. the protoplasm of a somatic cell
  2. the somatic cells collectively Compare germ plasm
Derived Forms
somatoplastic, 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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somatoplasm in Medicine

somatoplasm so·mat·o·plasm (sō-māt'ə-plāz'əm, sō'mə-tə-)

  1. The entirety of specialized protoplasm, other than germ plasm, constituting the body.

  2. The protoplasm of a somatic cell.

so'ma·to·plas'tic (sō'mə-tə-plās'tĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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