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| a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S. |
| the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language). |
keratoderma ker·a·to·der·ma (kěr'ə-tō-dûr'mə)
n.
A horny covering or growth, especially of the skin.
A generalized thickening of the stratum corneum.