pinenePronunciation: /ˈpʌɪniːn/Definition of pinene noun [mass noun] Chemistry a colourless flammable liquid present in turpentine, juniper oil, and other natural extracts. A bicyclic terpene; chemical formula: C10H16; four isomers, especially α-pinene, the main constituent of turpentine Origin: late 19th century: from Latin pinus 'pine' + -enepinene in other Oxford dictionaries Definition of pinene in the US English dictionary
