plural of luminous flux

Light-emitting. / (vision, of a perceived color) Having a luminosity exceeding 100%. / (figuratively) Prominent or famous for virtue or greatness.

(astronomy, meteorology, aviation) Any of a variety of upper atmospheric optical phenomena associated with thunderstorms.

plural of transient luminous event

(astronomy) A type of weak supernova whose luminous shell cools quickly and within days goes dark