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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. |
demyelination de·my·e·lin·a·tion (dē-mī'ə-lə-nā'shən) or de·my·e·lin·i·za·tion (-lə-nĭ-zā'shən, -lĭn'ĭ-)
n.
The destruction or removal of the myelin sheath of a nerve fiber, as through disease.