Definition of Cebidae
: a family of platyrrhine monkeys comprising all the New World monkeys except the marmosets and tamarins, having one more pair of molar teeth in each jaw than the marmosets and usually a long prehensile tail, and constituting with the marmosets a superfamily that includes all the New World monkeys — compare platyrrhina
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Origin and Etymology of cebidae
New Latin, from Cebus, type genus + -idae
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