Try Our Apps


World Series Quiz


[fruhs-tuh m] /ˈfrʌs təm/
noun, plural frustums, frusta
[fruhs-tuh] /ˈfrʌs tə/ (Show IPA).
the part of a conical solid left after cutting off a top portion with a plane parallel to the base.
the part of a solid, as a cone or pyramid, between two usually parallel cutting planes.
Origin of frustum
1650-60; < Latin: piece, bit; probably akin to Old Irish brúid (he) breaks, Old English brȳsan to crush Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
Cite This Source
Examples from the Web for frusta
Historical Examples
British Dictionary definitions for frusta


noun (pl) -tums, -ta (-tə)
  1. 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
  2. the part of such a solid contained between two parallel planes intersecting the solid
(architect) a single drum of a column or a single stone used to construct a pier
Word Origin
C17: from Latin: piece; probably related to Old English brӯsan to crush, bruise
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for frusta



1650s, from Latin frustum "piece broken off," from PIE *bhrus-to-, from root *bhreu- "to cut, break up."

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for frustum

Few English speakers likely know this word

Word Value for frusta

Scrabble Words With Friends

Nearby words for frusta