from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of several isomeric monoterpene hydrocarbons found in the essential oil of cardamom, marjoram and other herbs
from The Century Dictionary and Cyclopedia
- n. A volatile liquid compound, C10H16, of cymolodor, contained in cardamom-oil and marjoram-oil.
Sorry, no etymologies found.
Chemical analysis of the plant led to the isolation of L-sabinene, d-limonene, fenchone, a-terpinene and felandrene (Mukherje et al. 1964), as well as several triterpenic acids, such as ursolic acid (Misra et al. 1983), diterpenoids, such as suaveolic acid and suaveolol (Misra et al. 1981).
The researchers suggest that a spray made with 2\% alpha terpinene is a promising natural mosquito repellent.
Thyme - In one study, carvacrol and alpha-terpinene, two compounds derived from the essential oil of thyme, were found to have significantly greater repellency than a commercial DEET repellent.