A cupola is a small, most-often dome-like structure, on top of a building. Often used to provide a lookout or to admit light and air, it usually crowns a larger roof or dome. The word derives, via Italian, from the lower Latin cupula (classical Latin cupella from the Greek kypellon) small cup (Latin cupa) indicating a vault resembling an upside down cup.
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cupola Common structural element of architecture that resembles the hollow upper half of a sphere.
