ostensorium

from WordNet (r) 3.0 (2006)

ostensorium
    n 1: (Roman Catholic Church) a vessel (usually of gold or
         silver) in which the consecrated Host is exposed for
         adoration [syn: {monstrance}, {ostensorium}]

from The Collaborative International Dictionary of English v.0.48

Ostensorium \Os`ten*so"ri*um\, Ostensory \Os*ten"so*ry\, n.; pl.
   L. {-soria}, E. {-sories}. [NL. ostensorium: cf. F.
   ostensoir. See {Ostensible}.] (R. C. Ch.)
   Same as {Monstrance}.
   [1913 Webster]

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