/ Dictionary / Index V vespertilionine: Meaning and Definition of Find definitions for: ves•per•til•i•o•nine Pronunciation: (ves"pur-til'ē-u-nīn", -nin), [key] — adj. of or pertaining to the bats of the subfamily Vespertilioninae, common in temperate regions and including most familiar species. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vespertide vespertine Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language