Word Study
cacodyl
CIDE DICTIONARY
cacodyl, n. [Gr. ill-smelling (kako`s bad + to smell) + -yl.].
Alkarsin; a colorless, poisonous, arsenical liquid, As2(CH3)4 , spontaneously inflammable and possessing an intensely disagreeable odor. It is the type of a series of compounds analogous to the nitrogen compounds called hydrazines. [1913 Webster]
OXFORD DICTIONARY
cacodyl, n. a malodorous, toxic, spontaneously flammable liquid, tetramethyldiarsine.
Derivative
cacodylic adj.
Etymology
Gk kakodes stinking f. kakos bad
For further exploring for "cacodyl" in Webster Dictionary Online