Quadrumana
Quadrumana , noun, plural
[New Latin See Quadrumane.]
(Zoology) A division of the Primates comprising the apes and monkeys; -- so called because the hind foot is usually prehensile, and the great toe opposable somewhat like a thumb. Formerly the Quadrumana were considered an order distinct from the Bimana, which last included man alone.