kōˈempshən noun
( -s )
Etymology: Latin coemption-, coemptio coemption, coemptio, from coemptus, past participle of coemere to buy up (from co- + emere to buy) + -ion-, -io -ion — more at redeem
obsolete : purchase of all supplies of a commodity in the market especially to gain a monopoly
• co·emp·tive (ˈ)kō|emptiv, -ēv adjective