great ape noun3 •Any member of the taxonomic family Hominidae, including gorilla, orangutan, chimpanzee, excluding Homo.Long before people thought in terms of evolution […] great apes were often confused with humans. — 2005 •A large non-human primate, such as a gorilla, an orangutan, or a chimpanzee. •Any member of the taxonomic family Hominidae, including Homo, and also many similar extinct species.This wrinkled layer of gray matter that's highly developed in humans and other great apes, as well as whales, dolphins, and elephants, helps coordinate complex cognitive processes. — 2014 formsgreat apes