Definitions

1. noun

A colourless or pale yellow, fragrant oil obtained from the leaves of certain species of trees, especially the eucalyptus.

“The cineole in the eucalyptus oil helped to relieve her congestion.”

2. chemistry

A naturally occurring organic compound, C10H18O, found in the essential oil of certain plants.

“The cineole was isolated from the leaves of the eucalyptus tree and analyzed.”