"The Italians apply the term il duomo to the principal church of a city, and the Germans call every cathedral church Dom; and it is supposed that the word in its present English sense has crept into use from the circumstance of such buildings being frequently surmounted by a cupola."
If the plane is parallel to the longer diagonal (macrodiagonal) of the prism, it is called a macrodome; if parallel to the shorter (brachydiagonal), it is a brachydome; if parallel to the inclined diagonal in a monoclinic crystal, it is called a clinodome; if parallel to the orthodiagonal axis, an orthodome.
Origin: F. Dome, It. Duomo, fr. L. Domus a house, domus Dei or Domini, house of the Lord, house of God; akin to Gr. House, to build, and E. Timber. See Timber.
(01 Mar 1998)
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