from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A colorless liquid, C10H20O, with a roselike odor, derived from any of several essential oils or made synthetically and used extensively in perfumery.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A natural acyclic monoterpenoid, occurring in citronella oils and used in perfumes and insect repellents.
from The Century Dictionary and Cyclopedia
- n. An alcohol, CH2 = C(CH3) (CH2)3CH(CH3)CH2CH2OH, found in its levogyrate form in rose-oil, pelargonium-oil, and geranium-oil. It is also formed by the reduction of citronellal. It boils at 117–118° C. under 17 millimeters.
Geranium is a very important and useful note in perfumery, but usually plays only a supporting role: its high contents of geraniol, citronellol both present at very high ratio in rose oil and absolute makes it a perfect rose extender.
For example, citronellol, been shown to be an antioxidant while geraniol and eugenol have antibacterial properties.
The spices are the small dried fruit rinds, which are aromatic with lemony citronellal and citronellol.
The oil contains geraniol and citronellol, both free, and combined with tiglic, valeric, butyric, and acetic acids; also l-menthone.
_ -- Several good and fairly cheap artificial rose oils are now obtainable, consisting chiefly of citronellol, geraniol, linalol, phenyl ethyl alcohol, and citral.