Ketone

[ki:tәun]

解释:

(noun.) any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals.

手打:瓦内萨--From WordNet

解释:

(n.) One of a large class of organic substances resembling the aldehydes, obtained by the distillation of certain salts of organic acids and consisting of carbonyl (CO) united with two hydrocarbon radicals. In general the ketones are colorless volatile liquids having a pungent ethereal odor.

手打:齐妮亚