Definition of lactic acid noun from the Oxford Advanced Learner's Dictionary


lactic acid

BrE BrE//ˌlæktɪk ˈæsɪd//
; NAmE NAmE//ˌlæktɪk ˈæsɪd//
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an acid that forms in sour milk and is also produced in the muscles during hard exercise
See the Oxford Advanced American Dictionary entry: lactic acid