/ Dictionary / Index S spermaceti: Meaning and Definition of Find definitions for: sper•ma•cet•i Pronunciation: (spûr"mu-set'ē, -sē'tē), [key] — n. Chem., Pharm. a pearly white, waxy, translucent solid, obtained from the oil in the head of the sperm whale: used chiefly in cosmetics and candles, and as an emollient. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: spermaceti (Thesaurus) sperm spermagonium Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language