1. A colorless liquid hydrocarbon found in pine oil and other essential oils, used in fragrances, solvents, and chemical synthesis.
Usage: chemistry; often used in plural form 'pinenes' to refer to its two isomers (alpha-pinene and beta-pinene)

Examples

• Pinene is one of the most abundant terpenes in nature.
• The fresh scent of pine trees comes partly from pinene in their essential oils.
• Chemists use pinene as a starting material for synthesizing other organic compounds.
• Alpha-pinene and beta-pinene are the two main isomers of pinene.
• Pinene is commonly found in turpentine and other plant-derived products.