subfreezing

English

Etymology

sub- +‎ freezing

Adjective

subfreezing (not comparable)

1. Colder than the freezing point of water; below 0 degrees C or 32 degrees F.

   The arctic cold front brought subfreezing temperatures, snow, freezing rain and treacherous driving conditions.

   • 1959, Steam's Finest Hour, edited by David P. Morgan, Kalmbach Publishing Co., page 20 (photo caption):

     A subfreezing December 1955 wind blows whistle steam past cab as J-5a 5439 with the Queen City yells for a Dayton (O.) crossing.