We found 12 dictionaries that define the word noise level:

General (8 matching dictionaries)

1. noise level: Vocabulary.com
2. noise-level: Wordnik
3. noise level: Dictionary.com
4. Noise level: Wikipedia, the Free Encyclopedia
5. noise level: Rhymezone
6. noise level: FreeDictionary.org
7. noise level: Mnemonic Dictionary
8. noise level: TheFreeDictionary.com

Computing (1 matching dictionary)

9. noise level: Encyclopedia

Tech (3 matching dictionaries)

10. AUTOMOTIVE TERMS (No longer online)
11. Glossary of Meteorology (No longer online)
12. NOISE LEVEL: NOISE CONTROL TERMS

(Note: See noise_levels as well.)

Definitions from WordNet (noise level) ▸ noun:  the amplitude level of the undesired background noise Phrases: Ambient noise level, signal to noise level, more... ▸ Words similar to noise level ▸ Usage examples for noise level ▸ Idioms related to noise level ▸ Wikipedia articles (New!) ▸ Words that often appear near noise level ▸ Rhymes of noise level ▸ Invented words related to noise level