Definition of commixtion in US English:

commixtion

(also commixion)

noun

  • 1The 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.

  • 2Christian Church. = "commixture".

Origin

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.