1. Of or relating to primates (such as monkeys and apes of Central and South America) having a broad nasal septum and nostrils that open to the sides.
Usage: zoology; comparative anatomy

1. A primate of the group Platyrrhini, including New World monkeys characterized by a broad nasal septum and side-facing nostrils.
Usage: zoology

Examples

• Platyrrhine monkeys are found exclusively in Central and South America.
• The howler monkey is a well-known platyrrhine species.
• Platyrrhine primates differ from Old World monkeys in their nasal structure.
• Scientists classify spider monkeys as platyrrhines based on their anatomical features.
• The broad nasal septum is a defining characteristic of platyrrhine primates.
• Platyrrhines typically have three premolars in each quadrant of the jaw.