Definition of: cacodyl

(kak′ə·dil, -dēl,) noun
1. Chem. The univalent arsenic radical, C₂H₆As, which unites with oxygen, sulfur, chlorine, etc., to form stinking, poisonous compounds.
2. A colorless, poisonous, stinking liquid, some of whose derivatives are used as accelerators in making rubber. [<Gk. kakōdia (<kakos bad + ozein smell) + -YL]
—cac′o·dyl′ic (-dil′ik) adjective