radiant

radius (Latin)

Ray (of light). Spoke (of a wheel). Staff, rod.

radio (Latin)

(active) I cause to radiate, irradiate.. (passive) I radiate, emit beams.

radiantis (Latin)

radiant (Middle French)

radiant (English)

(astronomy) The apparent origin, in the night sky, of a meteor shower.. (geometry) A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.. A point source from which radiation is emitted. (botany) Having a ray-like appearance, like the large marginal flowers of certain umbelliferous plants; said also of the cluster which has such marginal [...]