/ Dictionary / Index S spermotoxic: Meaning and Definition of Find definitions for: sper•mo•tox•ic Pronunciation: (spûr"mu-tok'sik), [key] — adj. (of a substance) toxic to spermatozoa. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spermophyte spermotoxin Related Content Daily Word Quiz: mongrel Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language