| gregorian | of or relating to Pope Gregory XIII or the calendar he introduced in 1582 |
|---|---|
| gregorian | of or relating to Pope Gregory I or to the plainsong chants of the Roman Catholic Church |
| gregorian | the solar calendar now in general use, introduced by Pope Gregory XIII in 1582 AD to correct an error in the Julian calendar by suppressing 10 days, making Oct 5 be called Oct 15, and providing that only centenary years divisible by 400 should be leap years |
| gregorian | a month in the Gregorian calendar |
| gregorian | a liturgical chant of the Roman Catholic Church |
| gregorian | any of a system of modes used in Gregorian chants up until 1600 |
| gregorian | a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror |