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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. |
| given to using long words. |
| irradiation (ɪˌreɪdɪˈeɪʃən) | |
| —n | |
| 1. | the act or process of irradiating or the state of being irradiated |
| 2. | the apparent enlargement of a brightly lit object when it is viewed against a dark background |
| 3. | a shaft of light; beam or ray |
| 4. | med |
| a. the therapeutic or diagnostic use of radiation, esp X-rays | |
| b. exposure of a patient to such radiation | |
| 5. | radiation another name for irradiance |
irradiation ir·ra·di·a·tion (ĭ-rā'dē-ā'shən)
n.
Exposure or subjection to the action of radiation for diagnostic or therapeutic purposes.
Medical treatment by exposure to radiation.
The spread of a nervous impulse beyond the usual path of conduction.