English

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

 

ester

 noun
noun
BrE BrE//ˈestə(r)//
 
; NAmE NAmE//ˈestər//
 
(chemistry)
 
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a sweet-smelling substance that is formed from an organic acid and an alcohol Word Origin mid 19th cent.: from German, probably from a blend of Essig ‘vinegar’ and Äther ‘ether’.
See the Oxford Advanced American Dictionary entry: ester