Of or pertaining to merchants, or the traffic carried on by merchants; having to do with trade or commerce; trading; commercial.Characteristic of the business of merchants; in accord with business principles.Synonyms Mercantile, Commercial. Commercial is the broader term, including the other. Mercantile applies only to the actual purchase and sale of goods, according to one's line of business; the mercantile class in a community comprises all such as are actually in the business of buying and selling. Commercial covers the whole theory and practice of commerce, home or foreign : as, the British are a commercial people; commercial usages, honor, law. The word is applicable wherever the more varied activities of commerce are concerned.