Definition of humidex noun from the Oxford Advanced Learner's Dictionary

 

humidex

 noun
noun
BrE BrE//ˈhjuːmɪdeks//
 
; NAmE NAmE//ˈhjuːmɪdeks//
 
[singular](Canadian English)
 
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a scale that measures how unpleasant hot and humid weather feels to people
See the Oxford Advanced American Dictionary entry: humidex