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 in popular culture with feathers to Greek mythology. The MGR Samadhi Memorial in Chennai, India, was redecorated in 2012 to include a pegasus, which symbolized "valour and energy". Hydra the Revenge is a Bolliger & Mabillard designed floorless roller coaster at Dorney Park & Wildwater Kingdom in Allentown, Pennsylvania with a Lernaean Hydra theme. The name of the ride pays tribute to the "Hercules" wooden roller coaster that once stood on the same spot. The theme itself is the Hydra coming back to life and seeking revenge over Hercules. During the Middle Ages, writers disdained the use of "pagan" influences such as Greek