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Definition of hazardous adjective from the Oxford Advanced Learner's Dictionary

hazardous

adjective
 
/ˈhæzədəs/
 
/ˈhæzərdəs/
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  1. involving risk or danger, especially to somebody’s health or safety
    • hazardous waste/materials/substances/chemicals
    • They endured a hazardous journey through thickening fog.
    • It would be hazardous to invest so much.
    • hazardous to somebody/something a list of products that are potentially hazardous to health
    Extra Examples
    • chemicals that are hazardous to human beings
    • environmentally hazardous substances
    • Britain produces almost five million tonnes of hazardous waste each year.
    Topics Dangerc1
    Oxford Collocations Dictionaryverbs
    • be
    • prove
    • become
    adverb
    • extremely
    • fairly
    • very
    preposition
    • for
    • to
    See full entry
    Word Originmid 16th cent.: from French hasardeux, from hasard ‘chance’, from Spanish azar, from Arabic az-zahr ‘chance, luck’, from Persian zār or Turkish zar ‘dice’.
See hazardous in the Oxford Advanced American DictionarySee hazardous in the Oxford Learner's Dictionary of Academic English
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adverb
 
 
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