| 单词 | radioactive |
| 释义 | radioactive (once / 3034 pages) adj When an object gives off a certain kind of energy, like the sun or an x-ray machine, it can be described as radioactive. The adjective radioactive is a scientific term for a particular type of energy-emitting substance or thing. Radioactive energy, or radiation, is made up of active particles or electromagnetic waves. Nuclear waste is radioactive, but so are more ordinary things, like cell phones and the food we eat. The French word for it is radio-actif, which was invented by Pierre and Marie Curie, who combined radiationem, Latin for "a shining" with actif, French for "active." WORD FAMILYradioactive: nonradioactive, radioactively, radioactivity+/radioactivity: radioactivities USAGE EXAMPLESThe plan is to inject the liquid radioactive waste so that it coats the tiny particles that would ultimately be sealed in stainless-steel canisters. Seattle Times(Dec 30, 2016) Energy Department is authorizing its contractor to resume the disposal of radioactive waste at the federal government’s underground repository in southern New Mexico. Seattle Times(Dec 23, 2016) Department of Energy, was built for the disposal of radioactive refuse generated for decades by the DOE's network of nuclear weapons laboratories and development facilities. Reuters(Dec 22, 2016) adj exhibiting or caused by radioactivity radioactive isotope radioactive decay radioactive fallout Syn|Ant hot having or dealing with dangerously high levels of radioactivity nonradioactive not radioactive |
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