Definition of sal volatile noun from the Oxford Advanced Learner's Dictionary

 

sal volatile

 noun
noun
BrE BrE//ˌsæl vəˈlætəli//
 
; NAmE NAmE//ˌsæl vəˈlætəli//
 
[uncountable]
 
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a type of smelling salts Word Origin mid 17th cent.: modern Latin, literally ‘volatile salt’.
See the Oxford Advanced American Dictionary entry: sal volatile