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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.
  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 []
    • 1838, L[etitia] E[lizabeth] L[andon], Duty and Inclination, volume II, London: Henry Colburn, page 227:
      Nevertheless, she seemed to him so new to life, so truly a child—a reason, doubtless, more urgent to uphold and lend her his protection: the ray of humanity irradiating her features—the exclamation that burst from her, upon his first arousing from the torpor of insensibility, whilst extended in his narrow hammock on ship-board, had ever since left impressions of gratitude on his memory.
  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.

Derived terms[edit]




  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[wen] Rees, [], by Biggs and Cottle, [], →OCLC:
      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





  1. second-person singular voseo imperative of irradiar combined with te