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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. |
| contradictory (ˌkɒntrəˈdɪktərɪ) | |
| —adj | |
| 1. | inconsistent; incompatible |
| 2. | given to argument and contention: a contradictory person |
| 3. | logic contrary Compare subcontrary (of a pair of statements) unable both to be true or both to be false under the same circumstances |
| —n , -ries | |
| 4. | logic a statement that cannot be true when a given statement is true or false when it is false |
| contra'dictorily | |
| —adv | |
| contra'dictoriness | |
| —n | |