Definition of dodecagonal in US English:

dodecagonal

adjective

  • See dodecagon

    • ‘There are two imposing gatehouses and a central dodecagonal hall, with wings A to F radiating off from it.’
    • ‘It is the power which is surrounded by a dodecagonal pyramid or dodecahedron—a hint which should persuade astrologers to reconsider their "signs of the zodiac."’

Pronunciation

dodecagonal

/dōdiˈkaɡənl/