Definition of hazardous adjective from the Oxford Advanced American Dictionary

 

hazardous

 adjective
adjective
NAmE//ˈhæzərdəs//
 
 
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involving risk or danger, especially to someone's health or safety hazardous waste/chemicals a hazardous journey It would be hazardous to invest so much. a list of products that are potentially hazardous to health
See the Oxford Advanced Learner's Dictionary entry: hazardous