taru-adjective, adverb taking the 'to' particle
bright; shining; clear; evident
Obsolete term. Used in classical Japanese as a taru-adjective or adverb with と, meaning bright, shining, clear, or evident. Not used in modern Japanese.
In classical texts, it was used as 炳として, expressing a state of being bright or clear.
The Chinese character 炳 is phono-semantic, combining 火 “fire” with 丙 as its phonetic element. It entered Japanese with the Sino-Japanese reading へい and meanings such as “bright” and “evident.”