transcription, транскрипция: [ ˈhwīt-ˌau̇t, ˈwīt- ]
noun
Etymology: white + black out
Date: 1942
: a surface weather condition in a snow-covered area (as a polar region) in which no object casts a shadow, the horizon cannot be seen, and only dark objects are discernible ; also : a blizzard that severely reduces visibility