SUBNORMAL
Meaning of SUBNORMAL in English
sub ‧ nor ‧ mal /ˌsʌbˈnɔːm ə l◂ $ -ˈnɔːr-/ BrE AmE adjective technical
less or lower than normal:
subnormal temperatures
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012