radiatio

Latin > English (Lewis & Short)

rădĭātĭo: ōnis, f. id.,
I a glittering, shining, a beamy lustre, radiation (postAug.): marmoris, Plin. 36, 5, 4, § 32: stellarum, Jul. Firm. Math. 1, 4. — Plur., Arn. 6, 208.