We found 23 dictionaries that define the word diesis:

General (19 matching dictionaries)

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

Art (1 matching dictionary)

20. Virginia Tech Multimedia Music Dictionary (No longer online)

Miscellaneous (1 matching dictionary)

21. Encyclopedia of Graphic Symbols (No longer online)

Science (1 matching dictionary)

22. Diesis: Eric Weisstein's World of Mathematics

Slang (1 matching dictionary)

23. diesis: The Folk File

(Note: See dieses as well.)

Definitions from Wiktionary (diesis) ▸ noun:  (music) Any of several intervals, smaller than a tone, in ancient Greek music. ▸ noun:  The double dagger sign (‡). Similar: disdiapason, ditone, musical interval, tone, second, diatessaron, diezeugmenon, diapente, diapason, semidiapason, more... Adjectives: enharmonic, minor, major, quadrantal, chromatic, greek, old, triental ▸ Words similar to diesis ▸ Usage examples for diesis ▸ Idioms related to diesis ▸ Wikipedia articles (New!) ▸ Popular adjectives describing diesis ▸ Words that often appear near diesis ▸ Rhymes of diesis ▸ Invented words related to diesis