Definition of giant order in English:

giant order

noun

Architecture
  • An order whose columns extend through more than one story.

    • ‘Huge monumental columns rising through more than one story (giant orders), soaring arches, and massive vaults rose to heights of 100 feet.’
    • ‘He proposed unifying the south front by means of a giant order and treating the elevation of the three-storey house as one palatial floor set on a high basement.’