One of the mysteries of the English language finally explained.
A cyclic ketone which is an oily liquid with an odour of peppermint, occurring in peppermint, geranium, and other essential oils; 2-isopropyl-5-methylcyclohexanone, C₁₀H₁₈O.
Late 19th century; earliest use found in Henry Roscoe (1833–1915), chemist and university administrator. From menth- + -one, perhaps after menthene.
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