ostensory noun. [ɒ'stɛns(ǝ)ri] Also in French form ostensoir [ɒstɛn'swɑ:], & in Latin form ostensorium [ɒstɛn'sɔ:rɪǝm], pl. -ia [-ɪǝ]. E18.
[medieval Latin ostensorium, formed as ostens-: see OSTENSIBLE, -ORY¹.]
Roman Catholic Church. An open or transparent vessel used to display the Host to the congregation at mass; a monstrance.

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