We found 8 dictionaries that define the word illuminants:

General (7 matching dictionaries)

1. illuminants: Merriam-Webster
2. illuminants: Collins English Dictionary
3. illuminants: Vocabulary.com
4. illuminants: Wordnik
5. illuminants: Wiktionary
6. illuminants: Dictionary.com
7. illuminants: TheFreeDictionary.com

Medicine (1 matching dictionary)

8. illuminants: Merriam-Webster Medical Dictionary

(Note: See illuminant as well.)

Definitions from Wiktionary (illuminant) ▸ noun:  Something that illuminates. ▸ adjective:  That illuminates. ▸ Also see illuminant Opposite: obscure, dark, dull, shadowy, unlit ▸ Words similar to illuminants ▸ Usage examples for illuminants ▸ Idioms related to illuminants ▸ Wikipedia articles (New!) ▸ Popular adjectives describing illuminants ▸ Popular nouns described by illuminants ▸ Words that often appear near illuminants ▸ Rhymes of illuminants ▸ Invented words related to illuminants