We found 26 dictionaries that define the word trade in:

General (21 matching dictionaries)

1. trade in: Longman Dictionary of Contemporary English
2. trade-in, trade in: Merriam-Webster
3. trade-in: Oxford Learner's Dictionaries
4. trade-in: American Heritage Dictionary of the English Language
5. trade-in, trade-in: Collins English Dictionary
6. trade-in, trade in: Vocabulary.com
7. Trade-In, Trade-in, trade-in: Wordnik
8. trade-in: Cambridge Advanced Learner's Dictionary
9. trade-in, trade in: Wiktionary
10. trade-in: Webster's New World College Dictionary, 4th Ed.
11. trade-in: The Wordsmyth English Dictionary-Thesaurus
12. trade-in: Infoplease Dictionary
13. trade-in, trade in: Dictionary.com
14. Trade In: Wikipedia, the Free Encyclopedia
15. trade-in, trade in: Rhymezone
16. trade-in: AllWords.com Multi-Lingual Dictionary
17. trade-in, trade in: FreeDictionary.org
18. trade-in, trade in: Mnemonic Dictionary
19. trade-in, trade in: TheFreeDictionary.com

Business (3 matching dictionaries)

20. trade in: Legal dictionary
21. trade-in: Financial dictionary
22. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

23. trade-in, trade in: Encyclopedia

Miscellaneous (1 matching dictionary)

24. trade in: Idioms

(Note: See trade_ins as well.)

Definitions from Wiktionary (trade in) ▸ verb:  To give a piece of merchandise as part of the payment or trade for something new. Similar: trade, part exchange, part-exchange, bargain, cash in, consume, countertrade, rechange, merchand, barter, more... Opposite: trade out, sell, dispose of, get rid of Phrases: trade in allowance, aids, trade in africa debt, debt, aids, trade in africa, debt aids trade in africa, trade in price, more... Adjectives: trade, deal, remainder, resale, instore, export, inboard, wholesale, short, cambial, retail ▸ Words similar to trade in ▸ Usage examples for trade in ▸ Idioms related to trade in ▸ Wikipedia articles (New!) ▸ Words that often appear near trade in ▸ Rhymes of trade in ▸ Invented words related to trade in