trade-inPronunciation: (trād'in"), [key]
goods given in whole or, usually, part payment of a purchase: We used our old car as a trade-in for the new one.
a business transaction involving a trade-in.
of or pertaining to the valuation of goods used in a trade-in: trade-in price.
of or pertaining to such a business transaction: trade-in terms.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.