[ree-rey-dee-ey-shuh
n] 
| 1. | Physics. radiation emitted as a consequence of a previous absorption of radiation. |
| 2. | Radio. retransmission of signals, a source of interference, due to frequency oscillations in a radio receiver. |
| re·ra·di·a·tion (rē-rā'dē-ā'shən) n. Radiation emission following the absorption of incident radiation. |