|1.||sending out rays of light; bright; shining|
|2.||characterized by health, intense joy, happiness, etc: a radiant countenance|
|3.||emitted or propagated by or as radiation; radiated: radiant heat|
|4.||sending out heat by radiation: a radiant heater|
|5.||physics Compare luminous (of a physical quantity in photometry) evaluated by absolute energy measurements: radiant flux; radiant efficiency|
|6.||a point or object that emits radiation, esp the part of a heater that gives out heat|
|7.||astronomy the point in space from which a meteor shower appears to emanate|
|[C15: from Latin radiāre to shine, from radius ray of light, |
radiant ra·di·ant (rā'dē-ənt)
Emitting heat or light.
Consisting of or emitted as radiation.
|radiant (rā'dē-ənt) Pronunciation Key
Noun The apparent celestial origin of a meteor shower. For example, a point in the constellation Gemini is the radiant of the Geminid meteor shower.