CIBORIUM
Etymology
Noun
ciborium (plural ciboriums or ciboria)
(architecture) A fixed vaulted canopy over a Christian altar, supported on four columns.
(religion) A covered receptacle for holding the consecrated wafers of the Eucharist.
Source: Wiktionary
Ci*bo"ri*um, n.: pl. Ciboria. Etym: [LL., fr. L. ciborium a cup, fr.
Gr.
1. (Arch.)
Definition: A canopy usually standing free and supported on four columns,
covering the high altar, or, very rarely, a secondary altar.
2. (R. C. Ch.)
Definition: The coffer or case in which the host is kept; the pyx.
Source: Webster’s Unabridged Dictionary 1913 Edition