Definition of bromine noun from the Oxford Advanced Learner's Dictionary

 

bromine

 noun
noun
BrE BrE//ˈbrəʊmiːn//
 
; NAmE NAmE//ˈbroʊmiːn//
 
[uncountable](symbol Br)
 
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a chemical element. Bromine is a dark red poisonous liquid and has a very strong unpleasant smell. It is mainly found in the form of salts in sea water. Word Origin early 19th cent.: from French brome, from Greek brōmos ‘a stink’, + -ine.
See the Oxford Advanced American Dictionary entry: bromine