from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The arsenic group (CH3)2As-.
  • n. A poisonous oil, As2(CH3)4, with an obnoxious garlicky odor.

from Wiktionary, Creative Commons Attribution/Share-Alike License

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

from the GNU version of the Collaborative International Dictionary of English

  • n. 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.

from The Century Dictionary and Cyclopedia

  • n. Dimethyl arsine, As(CH3)2, a metalloid radical, a compound of arsenic, hydrogen, and carbon.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a poisonous oily liquid with a garlicky odor composed of 2 cacodyl groups; undergoes spontaneous combustion in dry air
  • n. the univalent group derived from arsine


Greek kakōdēs, bad-smelling (kakos, bad; see kakka- in Indo-European roots + -ōdēs, -smelling from ozein, ōd-, to smell) + -yl.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Ancient Greek κακώδης (kakōdēs, "evil smelling") (Wiktionary)



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