radiō

1. Lucere, fulgere, splendere, nitere, denote a steady and continued brightness; fulgere (φλογεῖν) through a glaring light, or a dazzling fiery color, like φλέγω, lucere (from λευκός) through a beneficial light, and a soft fiery color, like φαίνω, φέγγω; splendere (from φάλανθος) as the consequence of a clear and pure light, in opp. to sordere; Cic. Sext. 28. Sen. Ep. 5. Martial, Ep. ii. 36. Tac. A. i. 84. Suet. Aug. 35; like λάμπω; nitere (from νίζω) as the consequence of humidity, oiling or washing, to glisten, in opp. to squalere. Cic. Fin. iv. 3. Orat. 32. Sen. Q. N. i. 17. Quintil. ii. 5, 23; like στίλβω. 2. Whereas coruscare, micare, radiare, mean an unsteady, tremulous light; coruscare (from κορύσσω) to shine like forked lightning; micare, to sparkle, like metal placed in the sun; radiare, to beam, like the shooting rays of the sun. Cic. Cat. ii. 3. qui nitent unguentis, qui fulgent purpura. Auct. ad Herenn. iv. 33. Tantus erat in armis splendor, ut solis fulgor obscurior videretur. Plin. H. N. xxxvii. 2. Splendor murrhinis sine viribus: nitorque verius quam splendor; for splendor denotes brightness, with regard to its intensity; nitor, with regard to its beauty. Auct. ad Herenn. iv. 50. Gemmæ nitore et auri splendore: hence, figuratively, splendor denotes pomp; nitor, only neatness. (ii. 76.)