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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. |
| opposition to the withdrawal of state support or recognition from an established church, esp. the Anglican Church in 19th-century England. |
trimethadione tri·meth·a·di·one (trī-měth'ə-dī'ōn')
n.
A white crystalline substance used as an anticonvulsant in the treatment of epilepsy.