transitive verb
-·at·ed, -·at·ing- to shine or throw light upon; light up; make bright
- to make clear; illuminate intellectually; enlighten
- to radiate; diffuse; spread; give out
- to expose to or treat by exposing to X-rays, ultraviolet rays, radium, or some other form of radiant energy
- to heat with radiant energy
Origin of irradiate
from Classical Latin irradiatus, past participle of irradiare, to beam upon, illumine: see in- and radiate- to emit rays; shine
- to become radiant
lighted up; irradiated
