tetrahedron
Americannoun
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tetrahedrons,
plural
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tetrahedra
plural
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Geometry. a solid contained by four plane faces; a triangular pyramid.
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any of various objects resembling a tetrahedron in the distribution of its faces or apexes.
noun
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a solid figure having four plane faces. A regular tetrahedron has faces that are equilateral triangles See also polyhedron
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any object shaped like a tetrahedron
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tetrahedrons
plural
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of tetrahedron
1560–70; tetra- + -hedron, modeled on Late Greek tetráedron, noun use of neuter of tetráedros four-sided
Vocabulary lists containing tetrahedron
UCPS 6th Grade Roots List #5
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Organic Chemistry
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Many elements overlapped, forming a multidimensional sculpture: a triangle might jut out of a tetrahedron and meet another triangle at a point.
From Scientific American ● Sep. 26, 2022
For example, a tetrahedron, a solid three-dimensional pyramid with four triangular faces, would fill in a group of four neurons firing together.
From Scientific American ● Sep. 26, 2022
The four anions surrounding this hole are arranged at the corners of a tetrahedron, so the hole is called a tetrahedral hole.
From Textbooks ● Feb. 14, 2019
The bonds in a silica tetrahedron have some of the properties of covalent bonds and some of the properties of ionic bonds.
From Textbooks ● Jan. 1, 2015
Pathfinder's final stage of descent was a balloon-covered tetrahedron.
From "The Martian" by Andy Weir
One part copper, two parts vanadium and four parts sulfur, the alloy features a 3D pyrochlore lattice consisting of corner-sharing tetrahedra.
From Science Daily ● Jan. 29, 2024
Its structure is highly polymeric and appears to contain three-dimensional networks of P4 tetrahedra joined by P-P single bonds.
From Textbooks ● Feb. 14, 2019
Silica tetrahedra are bonded in three-dimensional frameworks in both the feldspars and quartz.
From Textbooks ● Jan. 1, 2015
A silicate mineral is one in which silicon and oxygen are present as silica tetrahedra.
From Textbooks ● Jan. 1, 2015
Beautiful isolated tetrahedra of transparent yellow blende are found in the snow-white crystalline dolomite of the Binnenthal in the Valais, Switzerland.
From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" by Various
To precisely position the sensing components, the team built DNA tetrahedrons, which are small pyramid shaped nanostructures formed entirely from DNA.
From Science Daily ● Feb. 16, 2026
Off the shores of Long Beach, where sails could catch wind, a white fleet clustered around orange buoys shaped like tetrahedrons.
From Los Angeles Times ● Jul. 16, 2022
But Georgia-born Dylan Neuwirth’s sculptures have the weight of esoteric significance, like symbols you’d find in a medieval alchemy book: lines, circles, tetrahedrons in eerie blues and reds.
From Seattle Times ● Oct. 26, 2018
“There is no me. . . . There are clusters of tetrahedrons moving around together. . . . We don’t matter.”
From Washington Post ● Nov. 29, 2017
They separated, lining up on each side of the leader now standing a little in advance of the twin tetrahedrons, rigid and motionless as watching guards.
From The Metal Monster by Abraham Merritt
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