炳へい然ぜんへいぜんMeanings1taru-adjective, adverb taking the 'to' particlebright; shining; clear; evidentobsolete termObsolete literary term describing something vividly bright, shining, or clearly evident. Found only in classical texts.See also: 炳乎古こ典てんでは「炳へい然ぜんたる光ひかり」のように用もちいられた。In classical texts, it was used like 'a bright light'.