We found 30 dictionaries that define the word exertion:

General (25 matching dictionaries)

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

Business (1 matching dictionary)

24. exertion: Legal dictionary

Computing (1 matching dictionary)

25. exertion: Encyclopedia

Medicine (3 matching dictionaries)

26. Medical Dictionary (No longer online)
27. online medical dictionary (No longer online)
28. exertion: Medical dictionary

(Note: See exertions as well.)

Definitions from Wiktionary ( ) ▸ noun:  An expenditure of physical or mental effort. Similar: effort, travail, elbow grease, sweat, work, workout, exercise, action, job of work, heave, more... Opposite: relaxation, rest, leisure Phrases: physical exertion, dyspnea on exertion, Rating of perceived exertion, over exertion, great exertion, more... Adjectives: physical, great, muscular, mental, over, much, little, violent, active, slight, strenuous Colors:     red,     crimson,     scarlet,     maroon,     burgundy, more... ▸ Words similar to exertion ▸ Usage examples for exertion ▸ Idioms related to exertion ▸ Wikipedia articles (New!) ▸ Popular adjectives describing exertion ▸ Words that often appear near exertion ▸ Rhymes of exertion ▸ Invented words related to exertion