Sentence:  "Pure Land Buddhism" refers to a set of beliefs and practices that espouses for its aspirants the realization of the stage of non-retrogression ("avaivartika; pu t'ui-chuan") either in the present life or through rebirth in a Buddha land or realm ("Buddha-kṣetra; fo-kuo") called "Sukhāvatī" (Land of Bliss). ... The Buddha Amitāyus ("Wu-liang-shou"; Immeasurable Life) or Buddha <WSD>Amitābha</WSD> ("Wu-liang-kuang"; Immeasurable Light) is the 'transcendant' Buddha who presides over the Sukhāvatī world-realm. 
Meaning of the word marked with <WSD> tags:  In (Pure Land Buddhism), a branch of Mahāyāna Buddhism, the name of the principal buddha regarded as of celestial origin.