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carbon monoxide

noun
🔊/ˌkɑːbən məˈnɒksaɪd/
🔊/ˌkɑːrbən məˈnɑːksaɪd/
 [uncountable]
(symbol CO)
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  1. a poisonous gas formed when carbon burns partly but not completely. It is produced when petrol is burned in car engines.一氧化碳Topics The environmentc1, Physics and chemistryc1
    Oxford Collocations DictionaryCarbon monoxide is used before these nouns:
    • fumes
    • poisoning
    See full entry