<p><strong>Adjective</strong></p><ul><li>emitting rays of light; shining; bright: the radiant sun; radiant colors</li><li>bright with joy, hope, etc.: radiant smiles; a radiant future</li><li>Physics: emitted or propagated by radiation</li><li>Heraldry: noting a partition line having a series of flamelike indentations formed by ogees joined in zigzags; rayonny</li><li>(of a charge, as an ordinary) having an edge or edges so formed</li></ul><p><strong>Synonyms</strong></p><ul><li>resplendent</li><li>refulgent</li><li>beaming</li></ul><p><strong>Noun</strong></p><ul><li>a point or object from which rays proceed</li><li>Astronomy: the point in the heavens from which a shower of meteors appears to radiate</li><li>a refractory absorbing and radiating heat from the flames of a gas fireplace or the like</li></ul>