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Plural of cantharis.
Farlex Partner Medical Dictionary © Farlex 2012
cantharidesA poisonous, blistering preparation made from the powdered, dried bodies of the beetle Cantharis vesicatoria . Cantharides has been used criminally as an aphrodisiac with grave consequences. Also known as ‘Spanish fly’.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005