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heat index

Syllabification: heat in·dex

Entry from US English dictionary

Definition of heat index in English:

noun

A quantity expressing the discomfort felt as a result of the combined effects of the temperature and humidity of the air.

Definition of heat index in:

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Pronunciation: ɪnˈɡreɪʃɪeɪt
verb
bring oneself into favour with someone through flattery…