nondrying oil

noun
non·​dry·​ing oil | \ ˌnän-ˈdrī-iŋ- How to pronounce nondrying oil (audio) \

Definition of nondrying oil

: a highly saturated oil (such as olive oil) that is unable to solidify when exposed in a thin film to air

First Known Use of nondrying oil

1877, in the meaning defined above

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