We found 17 dictionaries that define the word retrofitting:

General (9 matching dictionaries)

1. retrofitting: Merriam-Webster
2. retrofitting: Oxford Learner's Dictionaries
3. retrofitting: Collins English Dictionary
4. Retrofitting, retrofitting: Wordnik
5. retrofitting: Wiktionary
6. retrofitting: Dictionary.com
7. Retrofitting: Wikipedia, the Free Encyclopedia
8. retrofitting: TheFreeDictionary.com
9. retrofitting: Vocabulary.com

Business (3 matching dictionaries)

10. Construction Term Glossary (No longer online)
11. Retrofitting: Disaster Management
12. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

13. retrofitting: Encyclopedia

Medicine (2 matching dictionaries)

14. Dorland's Illustrated Medical Dictionary (No longer online)
15. online medical dictionary (No longer online)

Tech (2 matching dictionaries)

16. Efficient Windows (No longer online)
17. Glossary of Water Resource Terms (No longer online)

(Note: See retrofit as well.)

Definitions from Wiktionary (retrofitting) ▸ noun:  The process by which something is retrofitted. Similar: retro-engineering, retooling, reflooring, retrocalculation, reconversion, retroflexion, retromoderation, retubing, retrofashion, re-equipment, more... Opposite: pre-fitting, pre-installation, pre-construction Types: LED, CFL, HID, more... Adjectives: seismic, expensive, such, extensive, costly, solar, safe, structural, mandatory, major, substantial ▸ Words similar to retrofitting ▸ Usage examples for retrofitting ▸ Idioms related to retrofitting ▸ Wikipedia articles (New!) ▸ Popular adjectives describing retrofitting ▸ Words that often appear near retrofitting ▸ Rhymes of retrofitting ▸ Invented words related to retrofitting