Illustrated Companion to the Latin Dictionary/Quadriforis

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

QUADRIF'ORIS sc. janua (τετράθυρος). A door, in which each of the two valves fold back into two parts, thus forming altogether four pieces, upon the same principle as our window-shutters and folding-doors; as is exemplified by the illustration (Quadriforis/1.1), representing a cabinet or armoire, from a Pompeian painting. Vitruv. iv. 6. 5.

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  Quadriforis/1.1