What is "humanzee"

n. a hypothetical hybrid of a male human and a female chimpanzee

The humanzee ( Homo sapiens sapiens × Pan) (also known as the Chuman or Manpanzee) is a hypothetical chimpanzee/ human hybrid. An unsuccessful attempt to breed such a hybrid was made by Ilya Ivanovich Ivanov in the 1920s. There have been occasional reports of human-chimpanzee hybridization, notably regarding a performing chimp named Oliver during the 1970s, but none of them have been confirmed. Similarly, the possibility of a chimpanzee– gorilla hybrid, known as koolakamba, also remains unsubstantiated.

The portmanteau word humanzee for a human–chimpanzee hybrid appears to have entered usage in the 1980s.