undecagon

[ uhn-dek-uh-gon, -guhn ]

noun

1. a polygon having 11 angles and 11 sides.

undecagon

/ ʌnˈdɛkəˌɡɒn /

noun

1. a polygon having eleven sides

Word History and Origins

Origin of undecagon¹

1720–30; < Latin un-, as in undecim eleven ( ūn ( us ) one + -decim, combining form of decem ten ) + decagon

Word History and Origins

Origin of undecagon¹

C18: from Latin undecim eleven (from unus one + decem ten) + -gon

Example Sentences

Fortuitously for Malay et al., the edges of the snub cube very nearly match up with the alternating ‘spokes’ that radiate from the centre of an undecagon to its edges.

From Nature