Radiant
in botany, diverging from a common center, like rays. In heraldry an epithet applied to an ordinary or charge, when it is presented edged with rays or beams; rayonnant; reyonnée.
In astronomy, the point in the heavens from which a star shower seems to proceed. In geometry, a straight line proceeding from a given point or fixed pole, about which it is conceived to revolve.
In optics, the luminous body or point from which rays of light falling on a lens or mirror diverge.