We found 3 dictionaries that define the word co-occurs:

General (3 matching dictionaries)

1. co-occurs: Merriam-Webster
2. co-occurs: Wiktionary
3. co-occurs: TheFreeDictionary.com

(Note: See co-occur as well.)

Definitions from WordNet (co-occur) ▸ verb:  go with, fall together ▸ Also see co-occur ▸ Words similar to co-occurs ▸ Usage examples for co-occurs ▸ Idioms related to co-occurs ▸ Wikipedia articles (New!) ▸ Words that often appear near co-occurs ▸ Rhymes of co-occurs ▸ Invented words related to co-occurs