kōˈempshē(ˌ)ō, -emptē- noun
( -s )
Etymology: Latin
Roman law : a ceremony symbolizing the sale of a woman to a man and bringing the woman under the manus of the man usually (1) as a plebeian marriage but sometimes (2) as a device of the woman to displace her guardian — called also respectively (1) coemptio matrimoni causa, (2) coemptio fiduciae causa