• adjective
• synonym
• antonym

• Gregorian calendar (noun)
  1. the system of arranging the 365 days of the year in months and giving numbers to the years from the birth of Christ, used in the West since 1582
• Gregorian calendar month (noun)
  1. a month in the Gregorian calendar
• Gregorian chant (noun)
  1. a kind of church music for voices alone
• Gregorian mode (noun)
  1. any of a system of modes used in Gregorian chants up until 1600; derived historically from the Greek mode
• Gregorian telescope (noun)
  1. a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the centre of the primary mirror
• More