oil

(oyl)

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[Fr. oile fr L. oleum, olive oil, oil]
A greasy liquid not miscible with water, usually obtained from and classified as mineral, vegetable, or animal. According to character, oils are subdivided principally as fixed (fatty) and volatile (essential).
Examples of fixed oils are castor oil, olive oil, and cod liver oil. Examples of volatile oils are oils of mustard, peppermint, and rose.

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