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Latin irradiatus


  • (verb) IPA(key): /ɪˈɹeɪdieɪt/
    • (file)
  • (adjective) IPA(key): /ɪˈɹeɪdiət/
  • (file)


irradiate (third-person singular simple present irradiates, present participle irradiating, simple past and past participle irradiated)

  1. (transitive, literary, poetic) To illuminate; to brighten; to shine light on.
    • c. late 18th century Sir W. Jones, Hymn to Lachsmi
      Thy smile irradiates yon blue fields.
  2. (transitive, literary, poetic) To enlighten intellectually; to illuminate.
    This book might irradiate your mind
    • a. 1740 Bishop George Bull, A discourse concerning the spirit of God in the faithful
      And indeed we ought, in these happy intervals, when our understandings are thus irradiated and enlightened, to make a judgment of the state and condition of our souls in the sight of God []
  3. (transitive, literary, poetic) To animate by heat or light.
    • a. 1676 (written, first published in 1817) , Matthew Hale, A letter of advice to his grandchildren, Matthew, Gabriel, Anne, Mary, and Frances Hale.
      you may subdue and conquer the temperament of your nature, to do all things well-pleasing to him, and that may irradiate and strengthen your souls
  4. (transitive, literary, poetic) To radiate, shed, or diffuse.
  5. (transitive, literary, poetic) To decorate with shining ornaments.
  6. (intransitive) To emit rays; to shine.
  7. (sciences) To apply radiation to.
    1. (medicine) To treat (a tumour or cancerous growth) with radiation.
    2. (transitive) To treat (food) with ionizing radiation in order to destroy bacteria.




  1. Illuminated; irradiated; made brilliant or splendid.
    • 1801, Robert Southey, “(please specify the page)”, in Thalaba the Destroyer, volume (please specify |volume=I or II), London: [] [F]or T[homas] N[orton] Longman and O. Rees, [], by Biggs and Cottle, [], OCLC 277545047:
      The co-existent Flame
      Knew the Destroyer; it encircled him,
      Roll’d up his robe, and gathered round his head,
      Condensing to intenser splendour there,
      His Crown of Glory, and his Light of Life,
      Hovered the irradiate wreath.

Related terms[edit]



Etymology 1[edit]



  1. inflection of irradiare:
    1. second-person plural present indicative/subjunctive
    2. second-person plural imperative

Etymology 2[edit]


irradiate f pl

  1. feminine plural of irradiato