/ Dictionary / Index S spermatozoid: Meaning and Definition of Find definitions for: sper•ma•to•zo•id Pronunciation: (spûr"mu-tu-zō'id, spûr-mat"u-), [key] — n. Bot., Mycol. a motile male gamete produced in an antheridium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: spermatozoid (Thesaurus) spermatotoxin spermatozoon Related Content Daily Word Quiz: laudable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language