the radioactive by-products from the operation of a nuclear reactor or from the reprocessing of depleted nuclear fuel.
any waste material containing radionuclides Also called nuclear waste
Radioactive materials that may be left after a commercial or laboratory process has been carried out. Some is “low-level” waste, such as objects that have touched the radioactive tracers used in certain medical tests. Other waste may be “high-level,” such as the material left in a nuclear reactor after the fuel has been consumed.
Note: There has been public debate over the safest means of storing the waste, which can remain dangerously radioactive for up to hundreds of thousands of years. Present practice calls for encasing the waste in metal, concrete, and ceramic containers and burying the containers deep underground in geologically stable locations.
- Radio alarm
noun clock radio Examples Easily switch between your favorite stations on the radio alarm with preset tuning buttons. Word Origin 1949
noun 1. the branch of astronomy that utilizes extraterrestrial radiation in radio wavelengths rather than visible light for the study of the universe. noun 1. a branch of astronomy in which a radio telescope is used to detect and analyse radio signals received on earth from radio sources in space radio astronomy The study of […]
[rey-dee-oh-aw-tuh-graf, -grahf] /ˌreɪ di oʊˈɔ təˌgræf, -ˌgrɑf/ noun 1. . /ˌreɪdɪəʊˈɔːtəˌɡrɑːf; -ˌɡræf/ noun 1. another name for autoradiograph radioautograph ra·di·o·au·to·graph (rā’dē-ō-ô’tə-grāf’) n. See autoradiograph.
[rey-dee-oh-aw-tog-ruh-fee] /ˌreɪ di oʊ ɔˈtɒg rə fi/ noun 1. .