A hominid is any member of the biological family Hominidae. These are the "great apes", living and extinct. At present there are humans, chimpanzees, gorillas and orangutans.
The word "hominid" has been used in various ways. The classification of the great apes has been revised several times in the last few decades. These revisions led to different uses of the word "hominid". The original meaning of the taxon Hominidae meant only humans and their closest relatives. Now this group is called the Hominina.