Cacodyl definition

kăkə-dĭl
The univalent arsenic group (CH3 )2 As.
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A poisonous oil, As2 (CH3 )4 , with an obnoxious garlicky odor.
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The radical As(CH3)2, composed of arsenic and methyl: its compounds are poisonous and foul-smelling.
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A poisonous, colorless liquid, As2(CH3)4, with an offensive odor: it is a polymer of this radical.
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(chemistry) The dimethylarsine radical (CH3)2As-
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(chemistry) Tetramethyldiarsine formally derived from two of these radicals; an evil-smelling liquid that spontaneously combusts in air.
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Origin of cacodyl

  • Greek kakōdēs bad-smelling (kakos bad kakka- in Indo-European roots) (-ōdēs -smelling) (from ozein ōd- to smell) –yl

    From American Heritage Dictionary of the English Language, 5th Edition

  • Ancient Greek κακώδης (kakōdēs, “evil smelling”)

    From Wiktionary