We found 18 dictionaries that define the word working out:

General (12 matching dictionaries)

1. working out: Merriam-Webster
2. working out: Collins English Dictionary
3. working out: Vocabulary.com
4. working-out: Wordnik
5. working out: Cambridge Advanced Learner's Dictionary
6. working out: Wiktionary
7. working out: Dictionary.com
8. Working-out, Working out: Wikipedia, the Free Encyclopedia
9. working out: Rhymezone
10. working out: FreeDictionary.org
11. working out: Mnemonic Dictionary
12. working out: TheFreeDictionary.com

Business (1 matching dictionary)

13. working out: Legal dictionary

Computing (1 matching dictionary)

14. working out: Encyclopedia

Medicine (2 matching dictionaries)

15. online medical dictionary (No longer online)
16. working out: Medical dictionary

Miscellaneous (1 matching dictionary)

17. working out: Idioms

Slang (1 matching dictionary)

18. working out: Urban Dictionary

Definitions from WordNet (working out) ▸ noun:  developing in intricate and painstaking detail Opposite: failing, unsuccessful, unproductive, ineffective Types: cardio, weight lifting, yoga, pilates, barre, spin, interval training, resistance training, more... Phrases: working out at, working it out, regrets working out, working things out, working out the details, more... ▸ Words similar to working out ▸ Usage examples for working out ▸ Idioms related to working out ▸ Wikipedia articles (New!) ▸ Words that often appear near working out ▸ Rhymes of working out ▸ Invented words related to working out