Definition of fenchone
: an oily terpenoid ketone C10H16O that is isomeric with camphor and has a camphoraceous odor, that exists in three optically different forms, occurring as the dextrorotatory form especially in fennel oil and as the levorotatory form in thuja oil, and that is used chiefly as a pine scent; 1,3,3-trimethyl-2-keto-norbornane
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of fenchone
German fenchon, from fenchel fennel + -on -one
Seen and Heard
What made you want to look up fenchone? Please tell us where you read or heard it (including the quote, if possible).