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captan

[kap-tan, -tuh n]
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noun
  1. a powder, C9H8Cl3NO2S, of white to cream color, used as a fungicide on vegetables, fruits, and flowers.
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Origin of captan

First recorded in 1950–55; shortening of mercaptan
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018