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Synonyms
ir·ra·di·ate (ĭ-rā́dē-āt́)

[Latin irradiāre, irradiāt-, to illuminate, in-, on; see in–2, + radiāre, to shine; see radiate.]

verb: -at·ed, -at·ing, -ates. 

transitive verb 

    1. To expose to radiation.
    2. To treat with radiation: irradiate farm produce so as to destroy bacteria.
  2. To shed light on; illuminate.
  3. To manifest in a manner suggesting the emission of light; radiate: irradiate goodness.

intransitive verb 

Archaic
  1. To send forth rays; radiate.
  2. To become radiant.

derivatives

ir·rádi·átive
adjective
ir·rádi·átor
noun