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单词 radiation
释义

radiation

English

Etymology

Borrowed from Latin radiatio, radiationis. By surface analysis, radiate + -ion.

Pronunciation

  • IPA(key): /ˌɹeɪ.di.ˈeɪ.ʃən/
  • (file)
  • (some US dialects) IPA(key): /ɹaɪ.di.ˈaɪ.ʃən/
  • (some Ghanaian speakers) IPA(key): /ɹæ.di.ˈeɪ.ʃən/

Noun

radiation (countable and uncountable, plural radiations)

  1. The shooting forth of anything from a point or surface, like diverging rays of light.
    heat radiation
  2. The process of radiating waves or particles.
  3. The transfer of energy via radiation.
    Coordinate terms: convection, conduction
  4. Radioactive energy.
    • 1986, "Weird Al" Yankovic (lyrics and music), “Christmas at Ground Zero”, in Polka Party!:
      It's Christmas at ground zero / And if the radiation level's OK / I'll go out with you / To see all the new / Mutations on New Year's Day
  5. (evolutionary theory, countable) A rapid diversification of an ancestral species into many new forms.
    • 2014, Elizabeth Kolbert, chapter 8, in The Sixth Extinction: An Unnatural History, Henry Holt and Company:
      So the question is: have plants and animals retained over this huge amount of time—whole radiations of mammals have come and gone in this period—have they retained these potentially costly characteristics?
    • 2016, Donald R. Prothero, The Princeton Field Guide to Prehistoric Mammals (page 136)
      The second [canid group] is the radiation of dogs in South America that began when the first canids arrived about 3 Ma, after crossing the Panama land bridge (Fig. 5.4).

Derived terms

  • background radiation
  • electromagnetic radiation
  • infrared radiation
  • ionizing radiation
  • radiation belt
  • thermal radiation
  • Van Allen radiation belt
  • radiate

Translations

The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.

See also

  • nucleomitophobia

Anagrams

  • antiradio

French

Etymology

Borrowed from Latin radiatio, radiationem.

Pronunciation

  • IPA(key): /ʁa.dja.sjɔ̃/
  • (file)

Noun

radiation f (plural radiations)

  1. radiation (all meanings)

Derived terms

  • ceinture de radiations de Van Allen
  • radier

Descendants

  • Romanian: radiație
  • Turkish: radyasyon

Further reading

  • radiation”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.
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