Definition of radious in English:

radious

adjective

  • Radiant, bright. Now rare.

Origin

Late Middle English. From classical Latin radiōsus radiant, resplendent (Plautus), in post-classical Latin also radial, of or belonging to the radius of a circle or sphere, surrounded by rays of light, rayed from radius + -ōsus.

Pronunciation

radious

/ˈreɪdɪəs/