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De - Pt| English Dictionary: Radioactive | by the DICT Development Group |
| 2 results for Radioactive | |
| From WordNet (r) 3.0 (2006) [wn]: | |
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| From Webster's Revised Unabridged Dictionary (1913) [web1913]: | |
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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. | |
