We found 28 dictionaries that define the word ardor:

General (25 matching dictionaries)

1. ardor: Merriam-Webster.com
2. ardor: Oxford Learner's Dictionaries
3. ardor: American Heritage Dictionary of the English Language
4. ardor: Collins English Dictionary
5. ardor: Vocabulary.com
6. Ardor, ardor: Wordnik
7. ardor: Cambridge Advanced Learner's Dictionary
8. ardor: Wiktionary
9. ardor: Webster's New World College Dictionary, 4th Ed.
10. ardor: The Wordsmyth English Dictionary-Thesaurus
11. ardor: Infoplease Dictionary
12. Ardor, ardor: Dictionary.com
13. ardor: Online Etymology Dictionary
14. ardor: Cambridge Essential American English Dictionary
15. Ardor (album), Ardor (film), The Ardor: Wikipedia, the Free Encyclopedia
16. Ardor: Online Plain Text English Dictionary
17. ardor: Webster's Revised Unabridged, 1913 Edition
18. ardor: Rhymezone
19. ardor: AllWords.com Multi-Lingual Dictionary
20. ardor: Webster's 1828 Dictionary
21. ardor: Free Dictionary
22. ardor: Mnemonic Dictionary
23. ardor: Dictionary/thesaurus

Business (1 matching dictionary)

24. ardor: Legal dictionary

Computing (1 matching dictionary)

25. ardor: Encyclopedia

Medicine (1 matching dictionary)

26. online medical dictionary (No longer online)

(Note: See ardors as well.)

Definitions from Wiktionary ( ) ▸ noun:  Great warmth of feeling; fervor; passion. ▸ noun:  Spirit; enthusiasm; passion. ▸ noun:  Intense heat. Similar: fervour, fervor, zeal, fervidness, fervency, ardour, fire, Elan, passion, wrath, more... Opposite: apathy, indifference, lethargy, listlessness Types: passion, desire, love, lust, fervor, more... Phrases: Zeal & Ardor, Zeal & Ardor discography, sans ardor, energy ardor, more... Adjectives: patriotic, great, revolutionary, such, military, youthful, same, martial, religious, much, equal Colors:     crimson,     scarlet,     ruby,     vermilion,     burgundy, more... ▸ Word origin ▸ Words similar to ardor ▸ Usage examples for ardor ▸ Idioms related to ardor ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ardor ▸ Words that often appear near ardor ▸ Rhymes of ardor ▸ Invented words related to ardor