Meaning of “burn (sth) up” in the English Dictionary

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"burn (sth) up" in British English

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burn (sth) up

phrasal verb with burn uk /bɜːn/ us /bɝːn/ verb burnt or burned, burnt or burned

B2 to destroy something completely with fire or heat, or to be destroyed completely by fire or heat:

Meteorites often burn up in the atmosphere before they reach the ground.

(Definition of “burn (sth) up” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)