“+ adjective
1. : registering less than zero on some scale, especially Fahrenheit
sub-zero temperatures
2. : characterized by or suitable for sub-zero temperature
sub-zero weather
sub-zero clothing
“+ adjective
1. : registering less than zero on some scale, especially Fahrenheit
sub-zero temperatures
2. : characterized by or suitable for sub-zero temperature
sub-zero weather
sub-zero clothing
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012