from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Mathematics The part of a solid, such as a cone or pyramid, between two parallel planes cutting the solid, especially the section between the base and a plane parallel to the base.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A cone or pyramid whose tip has been truncated by a plane parallel to its base.
- n. A region of a sphere delimited by two parallel planes.
from the GNU version of the Collaborative International Dictionary of English
- n. The part of a solid next the base, formed by cutting off the, top; or the part of any solid, as of a cone, pyramid, etc., between two planes, which may be either parallel or inclined to each other.
- n. One of the drums of the shaft of a column.
from The Century Dictionary and Cyclopedia
- n. A piece; particularly, a remaining piece of something of which a part is lacking, as the drum of a column.
- n. In geometry, the part of a solid next the base, left after cutting off the top part by a plane parallel to the base; or the part of any solid between two planes, which may be either parallel or inclined to each other: as, the frustum of a cone, of a pyramid, of a conoid, of a spheroid, or of a sphere.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed
Latin frūstum, piece broken off.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin frustum ("morsel"). (Wiktionary)