(of the atrium of an ancient Roman house) having roofs sloping downward and outward from a central opening.
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How to use displuviate in a sentence
The roof of the displuviate atrium sloped from the middle toward the sides, the water being carried off by lead pipes.Pompeii, Its Life and Art | August Mau
In the displuviate, there are beams which slope outwards, supporting the roof and throwing the rainwater off.Ten Books on Architecture | Vitruvius