radiatedEnglishOxford Dictionary of Englishradiated /ˈreɪdieɪtɪd / ▸ adjective 1 denoting energy emitted in the form of rays or waves: if electric heaters are left too close to furniture the radiated heat can start a fire dosimeters track exposure to radiated energy. 2 used in the names of animals with markings arranged like rays: radiated tortoises are classified as critically endangered.