Definition of dodecagon in English:

dodecagon

noun

  • A plane figure with twelve sides.

    • ‘How many triangles does it take to make a dodecagon?’
    • ‘Dissections can get quite elaborate: A seven-pointed star becomes two heptagons; a dodecagon turns into three identical squares; and so on.’
    • ‘If you have a 40 yard loop with a post every yard, it doesn't matter whether it's a circle, a square, or a dodecagon.’
    • ‘The authors describe a paper by Kürschák written in 1898 in which a regular dodecagon inscribed in a unit circle is investigated.’
    • ‘Incidentally, globes representing the Earth are often made this way using a regular dodecagon as the equatorial base.’

Origin

Late 17th century: from Greek dōdekagōnon, neuter (used as a noun) of dōdekagōnos twelve-angled.

Pronunciation:

dodecagon

/dōˈdekəˌɡän/