We found 24 dictionaries that define the word decahedron:

General (20 matching dictionaries)

1. decahedron: Merriam-Webster
2. decahedron: Oxford Learner's Dictionaries
3. decahedron: American Heritage Dictionary of the English Language
4. decahedron: Collins English Dictionary
5. decahedron: Vocabulary.com
6. decahedron: Wordnik
7. decahedron: Wiktionary
8. decahedron: Webster's New World College Dictionary, 4th Ed.
9. decahedron: The Wordsmyth English Dictionary-Thesaurus
10. decahedron: Infoplease Dictionary
11. decahedron: Dictionary.com
12. Decahedron: Wikipedia, the Free Encyclopedia
13. Decahedron: Online Plain Text English Dictionary
14. decahedron: Webster's Revised Unabridged, 1913 Edition
15. decahedron: Rhymezone
16. Decahedron: AllWords.com Multi-Lingual Dictionary
17. decahedron: Webster's 1828 Dictionary
18. decahedron: FreeDictionary.org
19. decahedron: Mnemonic Dictionary
20. decahedron: TheFreeDictionary.com

Art (1 matching dictionary)

21. decahedron: ArtLex Lexicon of Visual Art Terminology

Computing (1 matching dictionary)

22. decahedron: Encyclopedia

Medicine (1 matching dictionary)

23. online medical dictionary (No longer online)

Science (1 matching dictionary)

24. Decahedron: Eric Weisstein's World of Mathematics

(Note: See decahedra as well.)

Definitions from Wiktionary (decahedron) ▸ noun:  A polyhedron with ten faces. Similar: didodecahedron, dodecicosidodecahedron, dodecahemicosahedron, icosidodecadodecahedron, pentadodecahedron, icosidodecahedron, duodecahedron, hendecahedron, icosahedron, enneadecahedron, more... ▸ Words similar to decahedron ▸ Usage examples for decahedron ▸ Idioms related to decahedron ▸ Wikipedia articles (New!) ▸ Popular adjectives describing decahedron ▸ Words that often appear near decahedron ▸ Rhymes of decahedron ▸ Invented words related to decahedron