<p><strong>Adjective:</strong></p><ul><li>containing the cacodyl group.</li></ul><p><strong>Noun:</strong></p><ul><li>an oily, slightly water-soluble, poisonous liquid compound composed of two cacodyl groups, (CH 3) 2 As−As(CH 3) 2, that has a vile, garliclike odor and that undergoes spontaneous combustion in dry air.</li></ul>