What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
Belonging or relating to the group Nemocera (now the suborder Nematocera) of dipteran flies; nematoceran, nematocerous.
Mid 19th century; earliest use found in Robert Mayne (1808–1868). From scientific Latin Nemocera (P. A. Latreille in Nouveau Dictionnaire d'Histoire Naturelle X. 288; irregularly from ancient Greek νῆμα thread + κέρας horn: see kerato-) + -ous.