Chiefly with reference to Greek and Roman architecture: a method of building or type of masonry consisting of a double external wall of close-fitting stonework or brickwork, with a core of rubble and mortar or rubble and clay, sometimes also incorporating cross walls or blocks used for reinforcement and to bind the faces together. Also: the infill of such a wall. Frequently attributive, as "emplecton technique", "emplecton work", etc.