Online Google Dictionary

radioactive 中文解釋 wordnet sense Collocation Usage Collins Definition
Adjective
/ˌrādēōˈaktiv/,
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Emitting or relating to the emission of ionizing radiation or particles,
  1. Emitting or relating to the emission of ionizing radiation or particles
    • - radioactive decay
    • - the water was radioactive
  1. exhibiting or caused by radioactivity; "radioactive isotope"; "radioactive decay"; "radioactive fallout"
  2. (radioactivity) radiation: the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
  3. Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting ionizing particles or radiation. The emission is spontaneous in that the nucleus decays without collision with another particle. ...
  4. Radioactive is the 2002 debut album of the Japanese hip-hop group Heartsdales.
  5. "Radioactive" is a song by English rock band The Firm. It was the first single released from their eponymous début album The Firm, where it was the fifth track. It was written by Paul Rodgers.
  6. (Radioactivity (song)) "Radioactivity" (original German language title: "Radioaktivität") is a song written by Ralf Hütter, Florian Schneider and Emil Schult, and recorded by electronic band Kraftwerk as the title track of their 1975 album Radio-Activity.
  7. (radioactivity) Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus; The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc
  8. (Radioactivity) The property of certain nuclides of spontaneously emitting particles or gamma radiation, or of emitting x-radiation following orbital electron capture, or of undergoing spontaneous fission.
  9. Radioactivity is the property of a nucleus in unstable atoms that causes them to spontaneously release energy in the form of photons (e.g., gamma rays) or subatomic particles (e.g., alpha or beta particles).
  10. (Radioactivity) The property possessed by some elements, such as uranium, of giving off alpha, beta, or gamma rays.
  11. (Radioactivity) Behaviour of a substance in which the nuclei are undergoing transformation and emitting radiation.
  12. (Radioactivity) Energetic particles emitted as a nucleus undergoes spontaneous decay
  13. (Radioactivity) Energy emitted as particles or rays during the decay of an unstable isotope to a stable isotope.
  14. (Radioactivity) Idaho State University
  15. (Radioactivity) Instability of some atomic nuclei, causing them to change spontaneously to a lower energy level or to modify the number of protons and neutrons they contain. ...
  16. (Radioactivity) Materials that emit nuclear radiation, such as uranium.
  17. (Radioactivity) Property of certain substances to convert without external influence and emit a characteristic radiation.   Radioactivity was discovered for uranium by Becquerel in 1896. ...
  18. (Radioactivity) Radium is over 1 million times more radioactive than the same amount of uranium. Its decay occurs in at least seven stages; the successive main products have been studied and are called radium emanation or exradio, radium A, radium B, radium C, etc. ...
  19. (Radioactivity) Spontaneous nuclear transformations that result in the formation of new elements. These transformations are accomplished by emission of alpha or beta particles from the nucleus or by the capture of an orbital electron. ...
  20. (Radioactivity) The phenomena of destruction of the nuclei of inconstant atoms, that regulation in detriment of appetite in the form of conflicting sorts of radiations identical to alpha and beta particles, gamma rays etc. ...
  21. (Radioactivity) the process in which atoms undergo internal change with the resultant emission of electromagnetic or particulate radiation.
  22. (radioactivity) (1) The property of the nuclei of some isotopes to spontaneously decay (lose energy). Usual mechanisms are emission of , , or other particles and splitting (fissioning). Gamma rays are frequently, but not always, given off in the process. ...
  23. (radioactivity) The release of energy by rare, heavy elements when their nuclei decay into lighter nuclei.
  24. (radioactivity) release of alpha and beta particles and gamma rays when atoms of one element change to atoms of another element
  25. (radioactivity) the property that certain metals have of giving off rays or tiny particles from their atomic nuclei