We found 33 dictionaries that define the word masking:

General (18 matching dictionaries)

1. masking: Merriam-Webster
2. masking: American Heritage Dictionary of the English Language
3. masking: Collins English Dictionary
4. masking: Vocabulary.com
5. Masking, masking: Wordnik
6. masking: Cambridge Advanced Learner's Dictionary
7. masking: Wiktionary
8. masking: Infoplease Dictionary
9. Masking, masking: Dictionary.com
10. masking: Cambridge Essential American English Dictionary
11. Masking (art), Masking (disambiguation), Masking (illustration), Masking (in art), Masking (personality), Masking: Wikipedia, the Free Encyclopedia
12. Masking: Online Plain Text English Dictionary
13. masking: Rhymezone
14. Masking: AllWords.com Multi-Lingual Dictionary
15. masking: Webster's 1828 Dictionary
16. masking: FreeDictionary.org
17. masking: Mnemonic Dictionary
18. masking: TheFreeDictionary.com

Art (2 matching dictionaries)

19. Masking: Glossary of Binary Graphics
20. Masking: Lexicon of Linguistics

Business (2 matching dictionaries)

21. Construction Term Glossary (No longer online)
22. masking: Legal dictionary

Computing (1 matching dictionary)

23. masking: Encyclopedia

Medicine (3 matching dictionaries)

24. masking: Merriam-Webster Medical Dictionary
25. online medical dictionary (No longer online)
26. masking: Medical dictionary

Miscellaneous (1 matching dictionary)

27. masking: Idioms

Slang (1 matching dictionary)

28. masking: Urban Dictionary

Tech (5 matching dictionaries)

29. AUTOMOTIVE TERMS (No longer online)
30. MASKING: NOISE CONTROL TERMS
31. Space and Electronic Warfare Lexicon (No longer online)
32. Sweetwater Music (No longer online)
33. masking: Television: Critical Methods and Applications

(Note: See mask as well.)

Definitions from Wiktionary (masking) ▸ noun:  The act by which something is masked; the act of masking, of concealing or disguising. ▸ noun:  An entertainment at which the guests conceal their faces with masks. ▸ noun:  The practice of wearing safety masks, such as face masks. Similar: concealing, cover, screening, camouflage, reconcealment, veiling, velation, suppression, mortgaging, silencing, more... Types: face mask, eye mask, sleep mask, peel-off mask, clay mask, sheet mask, exfoliating mask, hydrating mask, more... Phrases: masking tape, Backward masking, forward masking, Unsharp masking, masking agent, more... Adjectives: visual, unsharp, backward, auditory, simultaneous, temporal, central, forward, contralateral, lateral, effective Colors:     beige,     taupe,     gray,     olive,     sand, more... ▸ Words similar to masking ▸ Usage examples for masking ▸ Idioms related to masking ▸ Wikipedia articles (New!) ▸ Popular adjectives describing masking ▸ Words that often appear near masking ▸ Rhymes of masking ▸ Invented words related to masking