Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

sub-zero

adjective
 
 
/sʌbˈzɪə.rəʊ/ US  /-ˈzɪroʊ/

Definition

Sub-zero temperatures are temperatures below zero degrees.Measurements of temperature
(Definition of sub-zero adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of sub-zero