We found 13 dictionaries that define the word factor I:

General (7 matching dictionaries)

1. factor I: Vocabulary.com
2. factor i: Dictionary.com
3. Factor I: Wikipedia, the Free Encyclopedia
4. factor i: Rhymezone
5. factor i: FreeDictionary.org
6. factor i: Mnemonic Dictionary
7. factor I: TheFreeDictionary.com

Business (2 matching dictionaries)

8. factor I: Legal dictionary
9. factor I: Financial dictionary

Computing (1 matching dictionary)

10. factor I: Encyclopedia

Medicine (3 matching dictionaries)

11. Dorland's Illustrated Medical Dictionary (No longer online)
12. online medical dictionary (No longer online)
13. factor I: Medical dictionary

Definitions from WordNet (factor i) ▸ noun:  a protein present in blood plasma; converts to fibrin when blood clots Phrases: Complement factor I, insulin like growth factor i, insulin-like growth factor i, more... ▸ Words similar to factor I ▸ Usage examples for factor I ▸ Idioms related to factor I ▸ Wikipedia articles (New!) ▸ Words that often appear near factor I ▸ Rhymes of factor I ▸ Invented words related to factor I