irradiated adjective3 •Having been exposed to radiation (as for example by imaging, food-safety sterilization, or a nuclear blast). •Emitted outwards from a centre like rays. •Having rays; radiant.Per Fess, Or, and Argent, a Rose irradiated Gules, therefrom issuant two Griphons' heads addorsed Sable. William Barlow. — 1829 formsmore irradiated · most irradiated