Mercantile/ˈmɜːrkəntiːl,ˈmɜːrkəntaɪl/ Definition 1 of 2Pro Tip 1/3Business Context Use 'mercantile' in formal discussions or writings about business and trade. The mercantile transactions between the countries increased this year. Pro Tip 2/3Historical Tone 'Mercantile' often references past eras when trade was a dominant societal aspect. The port was once a hub of mercantile prosperity. Pro Tip 3/3Specific Jargon 'Mercantile' is often used within specific business-related fields like economics or history. He studied the mercantile policies of the 18th century.