- any of a series of isomeric, unsaturated hydrocarbons of the general formula CH, found in resins, essential oils, etc.: they are used in perfumes, medicines, etc.
- any of various derivatives of the terpene hydrocarbons
Origin of terpeneGerman terpen from terp(entin), turpentine + -en, -ene
Any of various unsaturated hydrocarbons, C10H16, found in essential oils and oleoresins of plants such as conifers and used in organic syntheses.
Origin of terpeneObsolete terp(entine) variant of turpentine -ene
Terpenes are properly only hydrocarbons. Oxygenated derivatives are terpenoids.