/ Dictionary / Index S seminal principle: Meaning and Definition of Find definitions for: sem'inal prin'ciple Pronunciation: [key] — Philos. Philos. a potential, latent within an imperfect object, for attaining full development. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. seminal fluid seminal vesicle Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language