Definition of "pinene" [pinene]

• Either of two isomeric terpene liquids, C10H16, used as solvents and in making resins. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Softwoods emit terpenes, the most common of which is alpha pinene, which is what turpentine is made of."
• "Of these, limonene is commonly found in household cleaners; others include camphor and alpha-pinene."
• "For example, the ever-popular weeping fig (Ficus Benjamina) was better than many of its peers against octane and alpha-pinene."