We found 26 dictionaries that define the word macron:

General (21 matching dictionaries)

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

Art (1 matching dictionary)

22. English-Chinese Dictionary of Graphic Communications (Big 5) (No longer online)

Computing (1 matching dictionary)

23. macron: Encyclopedia

Miscellaneous (1 matching dictionary)

24. macron: Wordcraft Dictionary

Science (1 matching dictionary)

25. Macron: Eric Weisstein's World of Mathematics

Slang (1 matching dictionary)

26. Macron: Urban Dictionary

(Note: See macrons as well.)

Definitions from Wiktionary (Macron) ▸ noun:  (orthography) A short, straight, horizontal diacritical mark (◌̄) placed over a letter, usually to indicate that the pronunciation of a vowel is long. ▸ noun:  A surname from French. Similar: macron below, breve, circumflex, diacritical, diacritical mark, tilde, acute accent, accent mark, diacritic, double acute accent, more... Opposite: micron, short vowel, breve Phrases: Emmanuel Macron, macron below, Brigitte Macron, Jean-Michel Macron, Opinion polling on the Emmanuel Macron presidency, more... Colors:     beige,     cream,     pastel pink,     lavender,     mint green, more... ▸ Word origin ▸ Words similar to macron ▸ Usage examples for macron ▸ Idioms related to macron ▸ Wikipedia articles (New!) ▸ Popular adjectives describing macron ▸ Words that often appear near macron ▸ Rhymes of macron ▸ Invented words related to macron