- a colorless, oily, slightly water-soluble liquid terpene ether, C10H18O, having a camphorlike odor and a pungent, spicy, cooling taste, found in eucalyptus, cajeput, and other essential oils: used in flavoring, perfumery, and medicine chiefly as an expectorant.
Also cin·e·ol [sin-ee-awl, -ol] /ˈsɪn iˌɔl, -ˌɒl/.
Origin of cineole
alteration of New Latin oleum cinae, equivalent to oleum oil + genitive singular of cina wormseed
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018