Gregorian calendar /grɪˈgorijən-/ noun Learner's definition of GREGORIAN CALENDAR
[singular]
: the calendar system that is used by most people in the world today（当今世界上大多数人使用的）格列高利历，公历，阳历 ◊ The Gregorian calendar was introduced in 1582 by Pope Gregory XIII. It is now used throughout the world for legal and business purposes.格列高利历由教皇格列高利十三世于1582年推广使用，是现今全世界法律和商业的通用公历。