/ Dictionary / Index G germinal vesicle: Meaning and Definition of Find definitions for: ger'minal ves'icle Pronunciation: [key] — Embryol. Embryol. the large, vesicular nucleus of an ovum before the polar bodies are formed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. germinal disk germinant Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language