Tithonus (tĭthōˈnəs) [key], in Greek mythology, prince of Troy; son of Laomedon. He was loved by the dawn goddess, Eos, who bore him Memnon. When Eos begged Zeus to bestow immortality upon Tithonus, she forgot to ask the god to grant her lover eternal youth; so Tithonus grew older and older until Eos, out of pity, changed him into a grasshopper.
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