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cacodyl

[kak-uh-dil] /ˈkæk ə dɪl/
adjective
1.
containing the cacodyl group.
noun
2.
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.
Origin
1840-1850
1840-50; < Greek kakṓd(ēs) ill-smelling (kak(o)- caco- + -ōd- smell + -ēs adj. suffix) + -yl
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cacodyl

cacodyl

/ˈkækədaɪl/
noun
1.
an oily poisonous liquid with a strong garlic smell; tetramethyldiarsine. Formula: [(CH3)2As]2
Derived Forms
cacodylic (ˌkækəˈdɪlɪk) adjective
Word Origin
C19: from Greek kakōdēs evil-smelling (from kakoscaco- + ozein to smell) + -yl
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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