pteroma
/ptəˈrəʊmə/ /təˈrəʊmə/noun
Classical Archit. The walkway between the cella of a Greek or Roman temple and the surrounding colonnade.
Origin
Late 18th century. From classical Latin pteroma colonnade of a temple (Vitruvius), in post-classical Latin also in sense 2 from ancient Greek πτέρωμα plumage from πτερόν feather, wing, in Hellenistic Greek also side wall of a temple + -μα.