undecagon

[ uhn-dek-uh-gon, -guh n ]
/ ʌnˈdɛk əˌgɒn, -gən /

noun

a polygon having 11 angles and 11 sides.

Nearby words

  1. undated,
  2. undauntable,
  3. undaunted,
  4. undaunting,
  5. undead,
  6. undeceive,
  7. undecided,
  8. undecillion,
  9. undecipherable,
  10. undecisive

Origin of undecagon

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for undecagon

undecagon

/ (ʌnˈdɛkəˌɡɒn) /

noun

a polygon having eleven sides

Word Origin for undecagon

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012