Korean edit

Etymology edit

Sino-Korean word from 不變

Pronunciation edit

Romanizations
Revised Romanization?bulbyeon
Revised Romanization (translit.)?bulbyeon
McCune–Reischauer?pulbyŏn
Yale Romanization?pul.pyen

Noun edit

불변 (bulbyeon) (hanja 不變)

  1. unchangeability; invariability; immutability; constancy; permanence