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Definition of sub-freezing adjective from the Oxford Advanced Learner's Dictionary

sub-freezing

adjective
 
/ˌsʌb ˈfriːzɪŋ/
 
/ˌsʌb ˈfriːzɪŋ/
[only before noun] (North American English)
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  1. colder than 32℉ or 0℃ compare sub-zero
    Oxford Collocations DictionarySub-zero is used with these nouns:
    • temperature
    See full entry
fever
noun
 
 
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