frustum

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frustum
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:
Noun1.frustum - a truncated cone or pyramidfrustum - 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
solid - a three-dimensional shape
truncated pyramid - a frustum formed from a pyramid
truncated cone - a frustum formed from a cone
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
Lee, "Accelerated three dimensional ray tracing techniques using ray frustums for wireless propagation models," Progress in Electromagnetics Research, vol.
Research I did at the time suggested that one of the few options was for game developers to explicitly create multiple view frustums. Most game engines don't do this, since it's difficult and time consuming.
Each sheet measured 560 mm x 590 mm x 5 mm and contained vertical frustums formed during manufacture with 15mm deep and 15mm diameter, which acted as miniature reservoirs, giving potential volume of 1.5 1/sheet.
In order to quantify buttressing and associated stem volume, the height and diameters of conical basal buttresses and connected tree boles can be transformed into frustums for calculating volumes and the volumes can be converted to ratios for each tree.
However, the existing models, such as shooting and bouncing ray (SBR) [4], bidirectional path tracing (BDPT) [12], brick tracing (BT) [13], ray frustums (RF) [14], prior distance measure (PDM) [8], and space division (SD) [15] techniques, require higher prediction time due to complex algorithms used and limitations of the used techniques.
However, the existing models, such as shooting and bouncing ray (SBR) [4], bi-directional path tracing (BDPT) [9], brick tracing (BT) [10], ray frustums (RF) [11], prior distance measure (PDM) [7], and space division (SD) [12] techniques require higher prediction time due to complex algorithms used.
In this work, conical frustums with the quasihexagonal nanostructures are fabricated on the InGaP window layer of the single junction GaAs solar cells using a polystyrene nanosphere lithography technique followed by anisotropic etching processes.
A typical cone meter consists of a differential producer fixed concentrically in the center of the pressure retaining pipe by which a differential pressure can be obtained across the interface of two cone frustums via an internal port-way system.
serial 1894L cabbages, carrots, waggon after waggon, bearing green turnips, built up in bastions of cabbages nodding to their pyramids and frustums fall, yet never falling, walls of baskets with such skill that enclosing masses of beans and peas, a rope was sufficient pyramids of snow-white turnips, to secure the whole swaying howdahs of mixed pro- load duce - creeping along behind aged night-horses, who seemed ever patiently wondering between their hollow coughs why they had always to work at that still hour when all other sentient creatures were privi- leged to rest (p.
One can form pyramids, frustums, and cavities with dimensions from less than 1 [mu]m up to a few millimeters.