/ Dictionary / Index S seminal fluid: Meaning and Definition of Find definitions for: sem'inal flu'id Pronunciation: [key] the fluid component of semen, excluding the sperm. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. seminal seminal principle Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language