We found 16 dictionaries that define the word luminousness:

General (12 matching dictionaries)

1. luminousness: Merriam-Webster
2. luminousness: Oxford Learner's Dictionaries
3. luminousness: Collins English Dictionary
4. luminousness: Vocabulary.com
5. luminousness: Wordnik
6. luminousness: Wiktionary
7. luminousness: Dictionary.com
8. luminousness: Rhymezone
9. luminousness: Webster's 1828 Dictionary
10. luminousness: FreeDictionary.org
11. luminousness: Mnemonic Dictionary
12. luminousness: TheFreeDictionary.com

Business (1 matching dictionary)

13. luminousness: Legal dictionary

Computing (1 matching dictionary)

14. luminousness: Encyclopedia

Medicine (2 matching dictionaries)

15. luminousness: Merriam-Webster Medical Dictionary
16. luminousness: Medical dictionary

(Note: See luminous as well.)

Definitions from Wiktionary (luminousness) ▸ noun:  The quality of being luminous. Similar: luminosity, luminance, brightness, light, luminousity, lucency, lustrousness, luciferousness, illuminability, illuminosity, more... Opposite: darkness, obscurity, dimness, shadowiness Types: brightness, light, luminance, luminescence, incandescence, fluorescence, phosphorescence, more... Adjectives: immediate, singular, soft, faint, general, pale, mental, curious, unearthly, serene, strange ▸ Words similar to luminousness ▸ Usage examples for luminousness ▸ Idioms related to luminousness ▸ Wikipedia articles (New!) ▸ Popular adjectives describing luminousness ▸ Words that often appear near luminousness ▸ Rhymes of luminousness ▸ Invented words related to luminousness