The gorilla's name Gorgo is a Greek word meaning dreadful or frightening. It is the root of the names Gorgon which is a mythical creature portrayed in ancient Greek literature of three sisters, Stheno, Euryale, and Medusa, with snakes for hair, who had the power to turn anyone who looked at them to stone. and Gorgosaurus which is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period, between about 76.6 and 75.1 million years ago..