American English

Definition of bitumen noun from the Oxford Advanced American Dictionary

 

bitumen

 noun
noun
NAmE//bɪˈtumən//
 
, NAmE//baɪˈtumən//
 
, NAmE//ˈbɪtʊmən//
 
[uncountable]
 
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a black sticky substance obtained from oil, used for covering roads or roofs
See the Oxford Advanced Learner's Dictionary entry: bitumen