We found 14 dictionaries that define the word pre-existing:

General (13 matching dictionaries)

1. pre-existing, pre-existing: Collins English Dictionary
2. pre-existing: Vocabulary.com
3. Pre-Existing, Pre-existing, pre-existing: Wordnik
4. pre-existing: Cambridge Advanced Learner's Dictionary
5. pre-existing: Wiktionary
6. pre-existing: Dictionary.com
7. pre-existing: Rhymezone
8. pre-existing: Webster's 1828 Dictionary
9. pre-existing: FreeDictionary.org
10. pre-existing: Mnemonic Dictionary
11. pre-existing: TheFreeDictionary.com

Medicine (1 matching dictionary)

12. pre-existing: Merriam-Webster Medical Dictionary

Definitions from WordNet ( ) ▸ adjective:  existing previously or before something Opposite: new, novel, fresh, original, innovative Types: congenital, inborn, hereditary, familial, genetic, more... Phrases: pre-existing condition, pre-existing data, more... ▸ Words similar to pre-existing ▸ Usage examples for pre-existing ▸ Idioms related to pre-existing ▸ Wikipedia articles (New!) ▸ Popular nouns described by pre-existing ▸ Words that often appear near pre-existing ▸ Rhymes of pre-existing ▸ Invented words related to pre-existing