nun·di·na·tion \ˌnəndəˈnāshən\noun (-s) Etymology: French, from Latin nundination-, nundinatio, from nundinatus (past participle of nundinari to trade, market, from nundinae nundine) + -ion-, -io -ion archaic: an act or instance of bartering : sale < the nundination of indulgences — Isaac Taylor >