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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). |
radiobiology ra·di·o·bi·ol·o·gy (rā'dē-ō-bī-ŏl'ə-jē)
n.
The study of the effects of radiation on living organisms.