Adjective
(of a temperature) below 0°C; freezing cold
(of a temperature) below 0°F (−18°C)
Source: en.wiktionary.orgDuring the Great Blizzard of 1899 the city reached convert, the only recorded sub-zero Fahrenheit reading in Florida. Source: Internet
Making provision for household tap water connections in the difficult terrains of Ladakh becomes more challenging owing to its sub-zero atmospheric condition as well as only 5-6 months’ working season. Source: Internet
And our country is in good hands". citation As soon as a few days pass with sub-zero temperatures, the media start speculating about the chances for an Elfstedentocht. Source: Internet
On the opposite side of the living room and up a few steps is an open, tiled breakfast area and, beyond that, a kitchen with an L-shaped center island topped in granite, a Wolf range, a Sub-Zero refrigerator and a pantry. Source: Internet
Sure shoveling is tedious, and the sub-zero temperatures along the East Coast are causing ice crystals to form on the end of your perpetually running nose, but there are warm fires to snuggle near and children laughing as they make angels in the snow. Source: Internet
No really, despite the copious amounts of snow and sub-zero temperatures, spring is almost here. Source: Internet