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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. |
| an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language. |
eponychium ep·o·nych·i·um (ěp'ə-nĭk'ē-əm)
n.
The condensed eleidin-rich areas of the epidermis preceding the formation of nails in the embryo.
The thin skin adhering to the nail at its base.