The claim that Greek gods are anthropomorphic means that they appear to have human form. The term "anthropomorphic" actually derives from two Greek words, "anthropos", meaning "human", and "morphos" meaning "form." The claim that Greek gods are anthropomorphic can be substantiated very easily in terms of the "Homeric Hymn to Demeter" and the other stories about Demeter in Graeco-Roman mythology (the "Rape of Persephone is actually Roman, but based on earlier Greek myth). All the gods and goddesses that appear in the stories (Demeter, Persephone, Zeus, Hades) have human form, and are described as looking like humans (although grander when the reveal their godlike majesty, as when Demeter abandons her disguise) and act like very powerful human beings. Also, gods can interbreed with humans, the standard test of compatibility.