Hypnos comes from the name of his Latin counterpart, Somnus. (in- "not" + somnus "sleep"), as well as a few less-common words such as "somnolent", meaning sleepy or tending to cause sleep and hypersomnia meaning excessive sleep, which can be caused by many conditions (known as secondary hypersomnia) or a rare sleep disorder causing excessive sleep with unknown cause, called Idiopathic Hypersomnia. 3D model of "Bronze head of Hypnos" via laser scan of a cast of British Museum's bronze. Hypnos In Greek mythology, Hypnos (; , "sleep") is the personification of sleep; the Roman equivalent is known as Somnus. In the
Pirene (mythology) early summer. The fountain was sacred to the Muses and it was there that Bellerophon found Pegasus (as Polyidus had claimed), drinking, and tamed him. Pirene (mythology) In Greek mythology, Pirene or Peirene (Ancient Greek: Πειρήνη means "of the osiers"), a nymph, was either the daughter of the river god Asopus, Laconian king Oebalus, or the River god Achelous, depending on different sources. By Poseidon she became the mother of Lecheas and Cenchrias. When Cenchrias was unintentionally killed by Artemis, Pirene's grief was so profound that she became nothing but tears and turned into the fountain outside the gates of