We found 12 dictionaries that define the word rank order:

General (8 matching dictionaries)

1. rank order: Merriam-Webster
2. rank order: Vocabulary.com
3. rank order: Dictionary.com
4. Rank order: Wikipedia, the Free Encyclopedia
5. rank order: Rhymezone
6. rank order: FreeDictionary.org
7. rank order: Mnemonic Dictionary
8. rank order: TheFreeDictionary.com

Business (2 matching dictionaries)

9. rank order: Legal dictionary
10. rank order: Financial dictionary

Computing (1 matching dictionary)

11. rank order: Encyclopedia

Medicine (1 matching dictionary)

12. rank order: Medical dictionary

(Note: See rank_orders as well.)

Definitions from WordNet (rank order) ▸ noun:  an arrangement according to rank Phrases: rank order correlation, rank order correlation coefficient, more... ▸ Words similar to rank order ▸ Usage examples for rank order ▸ Idioms related to rank order ▸ Wikipedia articles (New!) ▸ Words that often appear near rank order ▸ Rhymes of rank order ▸ Invented words related to rank order