Hȳp'o-gē'um, n.

n.; pl. HȲp'o-gē'ā. [Lat., from Gr. ὑπόγαιος, ὑπόγειος, subterranean, from ὑπό, under, and γαῖα, γῆ, the earth; Fr. hypogée.] (Anc. Arch.) The subterraneous portion of a building;—used to designate all the parts of a building which were under ground, as the cellar, &c. Gwill.