Definition of octagonal in English:

octagonal

adjective

  • Having the shape or cross section of an octagon; eight-sided.

    ‘an octagonal tower’
    • ‘Don't buy octagonal tiles for your bathroom!’
    • ‘Their excavations unearthed a large octagonal fortress.’
    • ‘The steeple culminates in a slender shingled octagonal spire.’
    • ‘Four-course dinners are served in an octagonal dining room.’
    • ‘A large domed octagonal chapel was added.’
    • ‘The classic gazebo is octagonal in shape and has a high, peaked roof.’
    • ‘Perhaps the most familiar of all traffic signs - the red octagonal stop sign - turns out to be a significant risk to good drivers.’
    • ‘This octagonal room with a panelled ceiling has views over the private mature gardens.’
    • ‘The tower's octagonal shape maximizes sunlight.’
    • ‘I also liked the octagonal studded table with matching stools and chairs.’

Pronunciation

octagonal

/ɒkˈtaɡ(ə)n(ə)l/