We found 6 dictionaries that define the word reflectances:

General (3 matching dictionaries)

1. reflectances: Merriam-Webster
2. reflectances: Wiktionary
3. reflectances: TheFreeDictionary.com

Computing (1 matching dictionary)

4. reflectances: Encyclopedia

Medicine (2 matching dictionaries)

5. reflectances: Merriam-Webster Medical Dictionary
6. reflectances: Medical dictionary

(Note: See reflectance as well.)

Definitions from Wiktionary (reflectance) ▸ noun:  (physics) The ratio of the flux reflected to that incident on a surface. ▸ Also see reflectance Opposite: absorbance, transmittance, opacity, opacity coefficient ▸ Words similar to reflectances ▸ Usage examples for reflectances ▸ Idioms related to reflectances ▸ Wikipedia articles (New!) ▸ Popular adjectives describing reflectances ▸ Words that often appear near reflectances ▸ Rhymes of reflectances ▸ Invented words related to reflectances