commerce UK /ˈkɒ.mɜːs/US /ˈkɑ.mɚs/noun 4verb 2forms 3 noun4 •The exchange or buying and selling of commodities; especially the exchange of merchandise, on a large scale, between different places or communities; extended trade or traffic. •Social intercourse; the dealings of one person or class in society with another; familiarity.Fifteen years of thought, observation, and commerce with the world had made him [Bunyan] wiser. — 1911 •An 18th-century French card game in which the cards are subject to exchange, barter, or trade. •(euphemistic, no longer used) Sexual intercourse. verb2 •(no longer used) To carry on trade; to traffic.[A]lwaies beware you commerce not with bankrupts, […] — 1599 •(no longer used) To hold conversation; to communicate.No, sir, he, / Vex'd with a morbid devil in his blood / That veil'd the world with jaundice, hid his face / From all men, and commercing with himself, / He lost the sense that handles daily life— […] — 1842 formscommerced · commercing · commerces