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tetrahedron

[ te-truh-hee-druhn ]
/ 藢t蓻 tr蓹藞hi dr蓹n /
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noun, plural tet路ra路he路drons, tet路ra路he路dra [te-truh-hee-druh]. /藢t蓻 tr蓹藞hi dr蓹/.
Geometry. a solid contained by four plane faces; a triangular pyramid.
any of various objects resembling a tetrahedron in the distribution of its faces or apexes.
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Origin of tetrahedron

1560鈥70; tetra- + -hedron, modeled on Late Greek tetr谩edron, noun use of neuter of tetr谩edros four-sided
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, 漏 Random House, Inc. 2021

How to use tetrahedron in a sentence

British Dictionary definitions for tetrahedron

tetrahedron
/ (藢t蓻tr蓹藞hi藧dr蓹n) /

noun plural -drons or -dra (-dr蓹)
a solid figure having four plane faces. A regular tetrahedron has faces that are equilateral trianglesSee also polyhedron
any object shaped like a tetrahedron

Derived forms of tetrahedron

tetrahedral, adjectivetetrahedrally, adverb

Word Origin for tetrahedron

C16: from New Latin, from Late Greek tetraedron; see tetra-, -hedron
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition 漏 William Collins Sons & Co. Ltd. 1979, 1986 漏 HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for tetrahedron

tetrahedron
[ t臅t鈥瞨蓹-h膿dr蓹n ]

Plural tetrahedrons tetrahedra
A polyhedron having four faces.
The American Heritage庐 Science Dictionary Copyright 漏 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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