contra
n.— «Business Trade with Bartercard Trade Exchange Business Barter is the exchange of business goods and business services without the need for cash. However, direct trade or contra as it is sometimes known, suffers from a lack of flexibility.…Organised business trade, via Bartercard’s trade exchange, overcomes the problems and restrictions of simple business trade or contra arrangements.» —“Increased business with Bartercard” in Southport, Australia Free-Press-Release.com June 13, 2005. (source: Double-Tongued Dictionary)
Further reading
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There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...