We found 24 dictionaries that define the word refining:

General (16 matching dictionaries)

1. refining: Merriam-Webster
2. refining: Collins English Dictionary
3. refining: Vocabulary.com
4. Refining, refining: Wordnik
5. refining: Cambridge Advanced Learner's Dictionary
6. refining: Wiktionary
7. Refining, refining: Dictionary.com
8. refining: Cambridge Essential American English Dictionary
9. Refining (glass), Refining (metallurgy), Refining: Wikipedia, the Free Encyclopedia
10. Refining: Online Plain Text English Dictionary
11. refining: Rhymezone
12. Refining: AllWords.com Multi-Lingual Dictionary
13. refining: Webster's 1828 Dictionary
14. refining: FreeDictionary.org
15. refining: Mnemonic Dictionary
16. refining: TheFreeDictionary.com

Business (1 matching dictionary)

17. refining: Legal dictionary

Computing (1 matching dictionary)

18. refining: Encyclopedia

Medicine (2 matching dictionaries)

19. refining: Merriam-Webster Medical Dictionary
20. refining: Medical dictionary

Tech (4 matching dictionaries)

21. Book Binding (No longer online)
22. Illustrated Glass Dictionary (No longer online)
23. Oil Analysis (No longer online)
24. Paper Making (No longer online)

(Note: See refine as well.)

Definitions from Wiktionary (refining) ▸ noun:  Refinement (process of refining) Similar: refinement, rerefiner, raffination, autorefinement, electrorefinement, refinery, biorefinement, resinification, crudening, distillation, more... Opposite: coarsening, unrefined, crude, rough, unpolished Types: petroleum refining, sugar refining, metal refining, chemical refining, paper refining, wood refining, textile refining, food refining, more... Phrases: petroleum refining, oil refining, sugar refining, refining industry, zone refining, more... Adjectives: electrolytic, further, petroleum, solvent, physical, grain, crude, over, subsequent, sugar, more Colors:     silver,     platinum,     pearl,     ivory,     champagne, more... ▸ Words similar to refining ▸ Usage examples for refining ▸ Idioms related to refining ▸ Wikipedia articles (New!) ▸ Popular adjectives describing refining ▸ Words that often appear near refining ▸ Rhymes of refining ▸ Invented words related to refining