frustum of a pyramid
frus·tum
(frŭs′təm)n. pl. frus·tums or frus·ta (-tə) 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.
[Latin frūstum, piece broken off.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
frustum
(ˈfrʌstəm)n, pl -tums or -ta (-tə)
1. (Mathematics) geometry
a. the part of a solid, such as a cone or pyramid, contained between the base and a plane parallel to the base that intersects the solid
b. the part of such a solid contained between two parallel planes intersecting the solid
2. (Architecture) architect a single drum of a column or a single stone used to construct a pier
[C17: from Latin: piece; probably related to Old English brӯsan to crush, bruise]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
frus•tum
(ˈfrʌs təm)n., pl. -tums, -ta (-tə).
1. the part of a conical solid left after cutting off a top portion with a plane parallel to the base.
2. the part of a solid, as a cone or pyramid, between two usu. parallel cutting planes.
[1650–60; < Latin: piece, bit]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
| Noun | 1. |  frustum - 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 removedsolid - a three-dimensional shape truncated pyramid - a frustum formed from a pyramid truncated cone - a frustum formed from a cone |
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