We found 20 dictionaries that define the word undecagon:

General (16 matching dictionaries)

1. undecagon: Merriam-Webster
2. undecagon: Oxford Learner's Dictionaries
3. undecagon: Collins English Dictionary
4. undecagon: Vocabulary.com
5. undecagon: Wordnik
6. undecagon: Wiktionary
7. undecagon: Infoplease Dictionary
8. undecagon: Dictionary.com
9. Undecagon: Online Plain Text English Dictionary
10. undecagon: Webster's Revised Unabridged, 1913 Edition
11. undecagon: Rhymezone
12. Undecagon: AllWords.com Multi-Lingual Dictionary
13. undecagon: Webster's 1828 Dictionary
14. undecagon: FreeDictionary.org
15. undecagon: Mnemonic Dictionary
16. undecagon: TheFreeDictionary.com

Art (1 matching dictionary)

17. undecagon: ArtLex Lexicon of Visual Art Terminology

Computing (1 matching dictionary)

18. undecagon: Encyclopedia

Medicine (1 matching dictionary)

19. online medical dictionary (No longer online)

Science (1 matching dictionary)

20. Undecagon: Eric Weisstein's World of Mathematics

(Note: See undecagons as well.)

Definitions from Wiktionary (undecagon) ▸ noun:  (geometry) A polygon with eleven sides and eleven angles. Similar: hendecagon, decagon, hexadecagon, heptadecagon, dodecagon, quindecagon, duodecagon, tridecagon, octadecagon, pentadecagon, more... Opposite: tridecagon, tetradecagon ▸ Words similar to undecagon ▸ Usage examples for undecagon ▸ Idioms related to undecagon ▸ Wikipedia articles (New!) ▸ Popular adjectives describing undecagon ▸ Words that often appear near undecagon ▸ Rhymes of undecagon ▸ Invented words related to undecagon