Definition of iodine noun from the Oxford Advanced American Dictionary

 

iodine

 noun
noun
NAmE//ˈaɪəˌdaɪn//
 
, NAmE//ˈaɪəˌdin//
 
[uncountable](symbol I)
 
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a chemical element. Iodine is a substance found in ocean water. A liquid containing iodine is sometimes used as an antiseptic (= a substance used on wounds to prevent infection).
See the Oxford Advanced Learner's Dictionary entry: iodine