Definition of Sacrarium:

part of speech: noun

Among the anc. Romans, a domestic chapel devoted to some particular divinity; the adytum of a temple.

Usage examples:

• In the Roman Missal subsequent to the Tridentine council the word Sacrarium is used. Matthew Holbeche Bloxam in "The Principles of Gothic Ecclesiastical Architecture, Elucidated by Question and Answer, 4th ed.".

• Eventually, the Pope resolved that it should be a sacrarium or cabinet for holy things, and that this should stand above the middle entrance door to the church. John Addington Symonds in "The Life of Michelangelo Buonarroti".

• Subsequently, in the reign of Charles the Second, the fine open area of the body of the church was filled with long rows of stiff and formal pews, which concealed the bases of the columns, while the plain but handsome stone walls of the sacred edifice were encumbered, to a height of eight feet from the ground, with oak wainscoting, which was carried entirely round the church, so as to shut out from view the elegant marble piscina on the south side of the building, the interesting arched niches over the high altar, and the sacrarium on the eastern side of the edifice. Charles G. Addison in "The History of the Knights Templars, the Temple Church, and the Temple".