Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Either of two volatile isomeric terpene liquids, C10H16, which are the major constituents of turpentine and are used as solvents and in making resins.

from The Century Dictionary.

  • noun The principal constituent of a large number of volatile oils, especially of those obtained from many varieties of pine.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun organic chemistry Either of two isomeric bicyclic monoterpene hydrocarbons that are the principal components of pine resin

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