Similar words: proactive, retroactively, active, actively, hyperactive, attractive, interactive, active transport. Meaning: ['reɪdɪəʊ'æktɪv] 
adj. exhibiting or caused by radioactivity.
adj. exhibiting or caused by radioactivity. 
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1 The machine can accurately locate radioactive material.
2 People should keep away from the radioactive waste.
3 Radioactive water had seeped into underground reservoirs.
4 We found that pitchblende contains at least two radioactive materials, one of which, accompanying bismuth, has been given the name polonium, while the other, paired with barium, has been called radium.
5 They were exposed to radioactive fallout during nuclear weapons tests.
6 The airborne radioactive particles have covered a huge area of Russia.
7 These are standard procedures for handling radioactive waste.
8 Radioactive waste is simply spent fuel.
9 A radioactive plume could reach the city within hours.
10 Uranium is a radioactive material.
11 Radioactive waste has been found at the dump.
12 Always exercise caution when handling radioactive substances.
13 Tritium is one of the mildest radioactive isotopes.
14 Radium and uranium are radioactive elements.
15 Radioactive material was mixed in/up the effluent.
16 The government has been storing radioactive waste at Fernald for 50 years.
17 At the extreme, some nuclear waste is so radioactive it has to be kept isolated for thousands of years.
18 The consequences of the radioactive leakage may not become apparent for a generation or more.
19 There is a danger of serious contamination from radioactive waste.
20 Eastern Europe is rapidly becoming a dumping-ground for radioactive residues.
21 Radioactive tracers have been used to map the metabolic activity of the brain.
22 The radioactive material is stored in a special radiation - proof container.
23 The government declared that it did not dump radioactive waste at sea.
24 Can't they see the insanity of dumping radioactive waste in the sea?
25 Documents leaked to this newspaper purport to reveal that radioactive waste is being illegally dumped on the site.
26 The waste is safely locked away until it is no longer radioactive.
27 We should not yet abandon this option for the disposal of highly radioactive waste.
28 No one has solved the problem of what to do with radioactive waste.
29 Economic benefits must be carefully weighed against the possible dangers of handling radioactive waste.
30 The original plan was to encase a small amount of a radioactive substance in a protective steel container.
More similar words: proactive, retroactively, active, actively, hyperactive, attractive, interactive, active transport, contradiction, activity, activist, deductive, addictive, detective, objective, effective, subjective, productive, collective, perspective, respective, afflictive, vindictive, protective, distinctive, destructive, effectively, collectively, constructive, respectively.