In civil law. The mixing or combining of goods belonging to two or more people, the result being then held in common or divided according to each person's contribution.
Sometimes contrasted with confusion, the latter especially being used of the mixing of liquids, and sometimes for other cases in which it is not possible to separate the goods of each person.
Late Middle English (in an earlier sense). From (i) Anglo-Norman and Middle French commixtion, Middle French commixion, commixcion, commiscion (French commixtion) blending, sexual intercourse, intermingling.