/plat"i ruyn', -rin/ , adj.
1. Anthropol. having a broad, flat-bridged nose.
2. belonging or pertaining to the primate group or superfamily Platyrrhini, comprising the New World monkeys, having a broad, flat nose and usually a long, prehensile tail.
n.
3. a platyrrhine animal.
Also, platyrrhinian /plat'i rin"ee euhn/ .
[ 1835-45; Platyrrhini, pl. of PLATYRHINUS platy- PLATY- + -rhin- -nosed, adj. deriv. of rhís, s. rhin- nose, snout; cf. CATARRHINE ]