/ Dictionary / Index S spermatoid: Meaning and Definition of Find definitions for: sper•ma•toid Pronunciation: (spûr'mu-toid"), [key] — adj. resembling sperm. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spermatogonium spermatophore Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language