santonin

A colorless crystalline compound, C₁₅H₁₈O₃, obtained from species of wormwood, especially santonica, and formerly used as an anthelmintic.

A bitter substance (C₁₅H₁₈O₃), the active principle of santonica, or wormseed.

A white crystalline substance having a bitter taste, extracted from the buds of levant wormseed and used as an anthelmintic. It occassions a peculiar temporary color blindness, causing objects to appear as if seen through a yellow glass.

An anthelmintic found in santonica and related plants.