megaron

noun, plural meg·a·ra [meg-er-uh] /ˈmɛg ər ə/, meg·a·rons. (in pre-Hellenic Greek architecture)

1. a building or semi-independent unit of a building, generally used as a living apartment and typically having a square or broadly rectangular principal chamber with a porch, often of columns in antis, and sometimes an antichamber or other small compartments.

noun plural -ra (-rə)

1. a tripartite rectangular room containing a central hearth surrounded by four pillars, found in Bronze Age Greece and Asia Minor