We found 24 dictionaries that define the word dark adaptation:

General (11 matching dictionaries)

1. dark adaptation: Merriam-Webster
2. dark adaptation: Oxford Learner's Dictionaries
3. dark adaptation: American Heritage Dictionary of the English Language
4. dark adaptation: Vocabulary.com
5. dark adaptation: Infoplease Dictionary
6. dark adaptation: Dictionary.com
7. Dark adaptation: Wikipedia, the Free Encyclopedia
8. dark adaptation: Rhymezone
9. dark adaptation: FreeDictionary.org
10. dark adaptation: Mnemonic Dictionary
11. dark adaptation: TheFreeDictionary.com

Business (1 matching dictionary)

12. dark adaptation: Legal dictionary

Computing (1 matching dictionary)

13. dark adaptation: Encyclopedia

Medicine (6 matching dictionaries)

14. dark adaptation: Merriam-Webster Medical Dictionary
15. Dorland's Illustrated Medical Dictionary (No longer online)
16. Medical Dictionary (No longer online)
17. online medical dictionary (No longer online)
18. Dark Adaptation: Visionary
19. dark adaptation: Medical dictionary

Science (2 matching dictionaries)

20. Visionary, for the Study of Vision (No longer online)
21. DARK ADAPTATION: Zoom Astronomy Glossary

Sports (1 matching dictionary)

22. CAVE AND KARST TERMINOLOGY (No longer online)

Tech (2 matching dictionaries)

23. dark adaptation: Lighting Design Glossary
24. Glossary of Meteorology (No longer online)

(Note: See dark-adapted as well.)

Definitions from WordNet (dark adaptation) ▸ noun:  the process of adjusting the eyes to low levels of illumination; cones adapt first; rods continue to adapt for up to four hours Opposite: light adaptation, photopic vision, daylight vision ▸ Words similar to dark adaptation ▸ Usage examples for dark adaptation ▸ Idioms related to dark adaptation ▸ Wikipedia articles (New!) ▸ Words that often appear near dark adaptation ▸ Rhymes of dark adaptation ▸ Invented words related to dark adaptation