/ Dictionary / Index G germ plasm: Meaning and Definition of Find definitions for: germ' plasm" Pronunciation: [key] the protoplasm of the germ cells containing the chromosomes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. germline insertion germproof Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language