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Radioactive - Dictionary Definition and Overview |
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Radioactive : adj : exhibiting or caused by radioactivity; "radioactive
isotope"; "radioactive decay"; "radioactive fallout"
[ant: nonradioactive]
Based on WordNet 2.0
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Radio-active \Ra`di*o-ac"tive\, a. [Radio- _ active.] (Physics)
Capable of luminescence under the action of cathode rays, X
rays, or any of the allied forms of radiation. --
Ra`di*o-ac*tiv"i*ty, n.
Based on Webster's Revised Unabridged Dictionary
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Radioactive : Radioactive: Emitting energy waves due to decaying atomic nuclei. Radioactive substances are used in medicine as tracers for diagnosis, and in treatment to kill cancerous cells.
Based on Webster's Revised Unabridged Dictionary (1913)
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