- belonging or pertaining to the group Catarrhini, comprising humans, anthropoid apes, and Old World monkeys, having the nostrils close together and opening downward and a nonprehensile, often greatly reduced or vestigial tail.
- a catarrhine animal.
- (of apes and Old World monkeys) having the nostrils set close together and opening to the front of the face
- Also: leptorrhine (of humans) having a thin or narrow nose
- an animal or person with this characteristic