dimout \ˈ ̷ ̷ˌ ̷ ̷\noun (-s) Etymology:dim out : a restriction limiting the use of lighting or the showing of lights at night especially during the threat of an air raid; also: a condition of partial darkness produced by such restriction < the continuing crisis gradually imposes a dimout on the sources and channels of public information — H.D.Lasswell > — compare blackout