/ Dictionary / Index S spermatogonium: Meaning and Definition of Find definitions for: sper•mat•o•go•ni•um Pronunciation: (spûr-mat"u-gō'nē-um, spûr"mu-tu-), [key] — pl. -ni•a one of the undifferentiated germ cells giving rise to spermatocytes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spermatogenous spermatoid Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language