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
Greek mythology and the Near East. Adonis seems to be the Greek counterpart—more clearly in cult than in myth—of a Near Eastern "dying god". Cybele is rooted in Anatolian culture while much of Aphrodite's iconography may spring from Semitic goddesses. There are also possible parallels between the earliest divine generations (Chaos and its children) and Tiamat in the "Enuma Elish". According to Meyer Reinhold, "near Eastern theogonic concepts, involving divine succession through violence and generational conflicts for power, found their way ... into Greek mythology". In addition to Indo-European and Near Eastern origins, some scholars have speculated on the debts of Greek