Having no thumb or thumbs; destitute or deprived of thumbs; spec. applied to the African Colobus and to the American Spider-monkeys (Ateles) in which…

Of, or pertaining to, the family of monkeys of which the Cebus is the type.

Of or relating to a group of apes typified by a former genus named Pithecus. Obsolete. rare.

Of, relating to, or characteristic of the subfamily Pitheciinae (family Cebidae) of South American monkeys, which includes the sakis and uakaris, and…

Of or relating to a group of New World monkeys including the genus Pithecia (sakis); pitheciine.

Of or relating to the primate family Callitrichidae.

= pitheciine, adj.