noun, plural ca·vae·di·a [kuh-vee-dee-uh, kah-, key-] /kəˈvi di ə, kɑ-, keɪ-/.
Examples from the Web for cavaedium
The dining-room, as well as the study of the master of the house, were in the cavaedium.
I must now tell how this may be brought about, and first I will speak of the proper construction of a cavaedium.Ten Books on Architecture|Vitruvius
(Posticum) was the name given to the little door, leading from the back of the cavaedium or peristyle to the street.
These are described by Vitruvius under the title of cavaedium.