undecagon

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ʌnˈdɛkəˌɡɒn/US:USA pronunciation: respellingUSA pronunciation: respelling(un dek′ə gon′)


WordReference Random House Unabridged Dictionary of American English © 2025
un•dec•a•gon  (un dek′ə gon′),USA pronunciation n. 
  1. Mathematicsa polygon having 11 angles and 11 sides.
  • Latin un-, as in undecim eleven (ūn(us) one + -decim, combining form of decem ten) + decagon
  • 1720–30

Collins Concise English Dictionary © HarperCollins Publishers::
undecagon / ʌnˈdɛkəˌɡɒn/
  1. a polygon having eleven sides
Etymology: 18th Century: from Latin undecim eleven (from unus one + decem ten) + -gon
'undecagon' also found in these entries (note: many are not synonyms or translations):
undecylenic acid

Forum discussions with the word(s) "undecagon" in the title:


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