Merriam-Webster Collegiate Dictionary - platyrrhine

 adjective  Date: 1857  1. New Latin Platyrrhina, from Greek platyrrhin-, platyrrhis broad-nosed, from platys + rhin-, rhis nose of, relating to, or being any of a division (Platyrrhina) of arboreal New World monkeys characterized by a broad nasal septum, usually 36 teeth, and often a prehensile tail — compare catarrhine  2. Greek platyrrhin-, platyrrhis having a short broad nose  • ~ noun