/ Dictionary / Index S sphen-: Meaning and Definition of Find definitions for: sphen- Pronunciation: [key] var. ofbefore a vowel: sphenic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sphecid sphene Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language