/ Dictionary / Index P passeriform: Meaning and Definition of Find definitions for: pas•ser•i•form Pronunciation: (pas'ur-u-fôrm", pu-ser'u-), [key] — adj. of or pertaining to the order Passeriformes; passerine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. passerby passerine Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language