A lot vs. Alot: 9 Grammatical Pitfalls


[pahy-neen] /ˈpaɪ nin/
noun, Chemistry
a liquid terpene, C 1 0 H 1 6 , the principal constituent of oil of turpentine, found in other essential oils: used chiefly in the manufacture of camphor.
1880-85; pine1 + -ene Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
British Dictionary definitions for pinene


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
Word Origin
C20: from pine1 + -ene
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Encyclopedia Article for pinene

either of two colourless liquid hydrocarbons, alpha-pinene and beta-pinene, occurring as major components of the essential oil of pine trees and used as a chemical raw material. Both compounds belong to the isoprenoid series and have the molecular formula C10H16. They often occur together and are separated by fractional distillation.

Learn more about pinene with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for pinene

Some English speakers likely know this word

Word Value for pinene

Scrabble Words With Friends

Nearby words for pinene