verb

irradiate

to irradiate, to expose to radiation, to illuminate

They irradiate the food to kill bacteria.

They irradiate the food to kill bacteria.

The sun will irradiate the entire valley at noon.

The sun will irradiate the entire valley at noon.

((sth.)) to expose (sth.) to radiation They irradiate the food to preserve it.

((sth.)) ((with sth.)) to illuminate (sth.) with light The lamp irradiates the room with a warm glow.

Synonyms: illuminate, expose, beam, shine upon

From Latin 'ir-' (in, upon) + 'radiare' (to shine, beam). Literally 'to shine upon'.

Think of 'radiation'. To irradiate is to apply radiation or light to something. The 'ir-' prefix means 'in' or 'on'.

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