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 to name its equipment such as the Nike missile project and the Navy having over a dozen ships named from Greek mythology. Greek mythology has been the source for names for a number of ships in the British navy as well as the Australian Royal Navy which has also named a training facility in Victoria called HMAS Cerebus. The Canadair CP-107 Argus of the Royal Canadian Air Force is named in honor of both the hundred eyed Argus Panoptes the "all seeing" and Odysseus' dog Argus who was the only one who identified Odysseus upon his return home. Many celestial