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irradiate

Pronunciation: /ɪˈreɪdɪeɪt/

Translate irradiate | into German | into Italian

Definition of irradiate

verb

[with object]

1expose (someone or something) to radiation.
expose (food) to gamma rays to kill microorganisms.

2illuminate (something) by or as if by shining light on it:happiness filled her, irradiating her whole face

Origin:

late 16th century (in the sense 'emit rays, shine upon'): from Latin irradiat- 'shone upon', from the verb irradiare, from in- 'upon' + radiare 'to shine' (from radius 'ray')