ciborium, n. [LL., fr. L. ciborium a cup, fr. Gr. a seed vessel of the Egyptian bean; also, a cup made from its largeleaves, or resembling its seed vessel in shape.].
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A canopy usually standing free and supported on four columns, covering the high altar, or, very rarely, a secondary altar. [1913 Webster]
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The coffer or case in which the host is kept; the pyx. [1913 Webster]