/ Dictionary / Index V vaccinal: Meaning and Definition of Find definitions for: vac•ci•nal Pronunciation: (vak'su-nl), [key] — adj. of, pertaining to, or caused by vaccine or vaccination. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Vacaville vaccinate Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language