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The Collaborative International Dictionary
Cacodyl

Cacodyl \Cac"o*dyl\, n. [Gr. ??????? ill-smelling (kako`s bad + ????? to smell) + -yl.] (Chem.) 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. [Written also cacodyle, and kakodyl.]

Wiktionary
cacodyl

n. 1 (context chemistry English) The dimethylarsine radical (CH3)2As- 2 (context chemistry English) tetramethyldiarsine formally derived from two of these radicals; an evil-smelling liquid that spontaneously combusts in air

WordNet
cacodyl
  1. n: a poisonous oily liquid with a garlicky odor composed of 2 cacodyl groups; undergoes spontaneous combustion in dry air [syn: tetramethyldiarsine]

  2. the univalent group derived from arsine [syn: cacodyl group, cacodyl radical, arsenic group]

Wikipedia
Cacodyl

Cacodyl, dicacodyl, tetramethyldiarsine, alkarsine or minor part of the " Cadet's fuming liquid" (after the French chemist Louis Claude Cadet de Gassicourt) (CH)As—As(CH) is a poisonous oily liquid with a garlicky odor. Cacodyl undergoes spontaneous combustion in dry air.

Usage examples of "cacodyl".

Shuech threw flaming cacodyl, and the caustic spread over one of the caterpillar figures, which batted without urgency at the fire.

In our laboratories our scientists had discovered a gas that was more potent than even cacodyl isocyanide the gas that had been discovered some fifteen years earlier and which destroyed any life it touched.

Simultaneously with his work on cacodyl, he was studying the composition of the gases given off from blast furnaces.

In our laboratories our scientists had discovered a gas that was more potent than even cacodyl isocyanide the gas that had been discovered some fifteen years earlier and which destroyed any life it touched.