WordReference Random House Unabridged Dictionary of American English © 2026
pas•ser•i•form
(pas′ər ə fôrm′, pə ser′ə-),USA pronunciation adj.
- Birdsof or pertaining to the order Passeriformes;
passerine.
- Neo-Latin Passeriformes, equivalent. to Latin passer sparrow + -iformes -iformes