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Either of two volatile isomeric terpene liquids, C10H16, which are the major constituents of turpentine and are used as solvents and in making resins.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Elements & Compounds) either of two isomeric terpenes, found in many essential oils and constituting the main part of oil of turpentine. The commonest structural isomer (α-pinene) is used in the manufacture of camphor, solvents, plastics, and insecticides. Formula: C10H16
[C20: from pine1 + -ene]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpaɪ nin)

a liquid terpene, C10H16, the principal constituent of oil of turpentine, used chiefly in the manufacture of camphor.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Crude sulfate turpentine act as a feedstock for the manufacturer who produces pinenes, flavorings, polymer additives, pine oil, fragrances and turpentine oil.
Polissiou, "Citrus essential oils and four enantiomeric pinenes against Culex pipiens (Diptera: Culicidae)," Parasitology Research, vol.
Pinenes are a class of bicyclic organic compounds typically found in the resin of conifers as well as in other flora, and are one of the most common biogenic organic emissions found in the atmosphere.
Nevertheless, more studies on the chemical composition of the tergal gland secretion of Zyras species are required to substantiate our findings and to clarify the exact stereochemistry of the identified pinenes.
Revised assignment ofthe 13C NMR spectra of a-and b- pinenes. Organic Magnetic Resonance 21 (2): 108-110.
The activity measurements showed that high end-conversions of pinenes can be achieved by catalytic oxidation at relatively low operating temperatures.
The bicyclic monoterpenes comprised mainly compounds of the camphane group, such as camphene, borneol, bornyl acetate, isobornyl acetate, the saturated ketone like camphor; carene, pinenes, together with sabinene.
Twenty-two chemical compounds were included in this classification, with the main compounds being hexanal, pinenes, 2-pentyl-furan, 2-octenal, nonanal, 2-methyl-naphthalene, and longer chain alkanes ([C.sub.14] - [C.sub.24]).
It was generally found that panels pressed at a hi gh temperature for shorter press times emitted more formaldehyde, pinenes, and higher molecular weight VOCs (defined as VOCs with boiling points higher than 40[degrees]C).
The lancewood profile was composed almost entirely of pinene volatiles (58 and 37% b- and a-pinene, respectively).