Definition of essential oil noun from the Oxford Advanced Learner's Dictionary


essential oil

BrE BrE//ɪˌsenʃl ˈɔɪl//
; NAmE NAmE//ɪˌsenʃl ˈɔɪl//
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an oil taken from a plant, used because of its strong smell for making perfume and in aromatherapy
See the Oxford Advanced American Dictionary entry: essential oil