Dictionary

propylaeum

noun pro·py·lae·um \ˌprä-pə-ˈlē-əm, ˌprō-\
plural -laea \-ˈlē-ə\

Definition of PROPYLAEUM

:  a vestibule or entrance of architectural importance before a building or enclosure —often used in plural
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Origin of PROPYLAEUM

Latin, from Greek propylaion, from pro- before + pylē gate — more at pro-
First Known Use: circa 1706

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