'tanacetone' definitions:

Definition of 'tanacetone'

From: GCIDE

thujone \thu"jone\ (th[=u]"j[=o]n), n. An oil, C10H16O, the chief constituent of cedar leaf oil (thuja oil), which is obtained from the northern white cedar (arbor vitae, Thuja occidentalis) or the western Red Cedar (Thuja plicatis). It is a stimulant similar to camphor. It is also called thujol, thuyol, absinthol, thuyone, tanacetol, and tanacetone. --Stedman. [PJC]