/roht"n ohn'/ , n. Chem., Pharm.
a white, crystalline, water-insoluble, poisonous heterocyclic compound, C 23 H 22 O 6 , obtained from derris root: used chiefly as the active ingredient of certain insecticides and in medicine in the treatment of chiggers and scabies.
[ 1920-25; roten- (said to be ]