tetrahedron

tet·ra·he·dron

(tĕt′rə-hē′drən)

n. pl. tet·ra·he·drons or tet·ra·he·dra (-drə)

A polyhedron with four faces.

[Greek tetraedron, from neuter of tetraedros, four-faced : tetra-, tetra- + -hedros, sided; see -hedron.]

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.

tetrahedron

(ˌtɛtrəˈhiːdrən)

n, pl -drons or -dra (-drə)

1. (Mathematics) a solid figure having four plane faces. A regular tetrahedron has faces that are equilateral triangles. See also polyhedron

2. (Mathematics) any object shaped like a tetrahedron

[C16: from New Latin, from Late Greek tetraedron; see tetra-, -hedron]

ˌtetraˈhedral adj

ˌtetraˈhedrally adv

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tet•ra•he•dron

(ˌtɛ trəˈhi drən)

n., pl. -drons, -dra (-drə).

1. a solid contained by four plane faces; a triangular pyramid.

2. any of various objects resembling a tetrahedron.

[1560–70; < Late Greek tetráedron]

tet·ra·he·dron

(tĕt′rə-hē′drən)

A three-dimensional geometric figure with four triangular faces.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

tetrahedron - any polyhedron having four plane faces

polyhedron - a solid figure bounded by plane polygons or faces

Translations

tetràedre

čtyřstěn

Tetraeder

tetraedro

tetraedri

tetraèdretétraèdre

tetraéder

tetraedro

三角錐四面体

tetraedro

тетраэдр

tetraeder

tetrahedron

[ˈtetrəˈhiːdrən] N (tetrahedrons, tetrahedra (pl)) [ˌtetrəˈhiːdrə] → tetraedro m

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

tetrahedron

n → Tetraeder nt

Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

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References in periodicals archive

Algi, A novel dual channel responsive zinc (II) probe, Tetrahedron Lett., 55, 5555 (2014).

Using Heterocycle to Improve the Selectivity of Rhodamine-6G Dye: Synthesis of Pyrrole-Modified Rhodamine-6G and its Recognition to Zn2+

The plate is designed as a tetrahedron so it is visible from all sides.

Holograms to Protect Fishing Vessels in India

At the meeting, he described the treatment options for AD as the four points of a tetrahedron: anti-inflammatories, antibiotics, antipruritics, and moisturization.

Nonpharmaceutical therapies offer alternatives

During the fun-filled morning, they got to make their own music and rhythms, make Lego robots move using coding software, create short animations using drawings and objects, omelette making and build a giant tetrahedron.

Hands-on time helps additional needs learners to work

Conceptualized as 3-sides of a tetrahedron, the model is of significance because it highlights the levels of regulations that RNs, GLPRNs and APRNs are held to.

Foundational Documents of Nursing: American Nurses Association Nursing: Scope and Standards of Nursing Practice, 3rd Edition: Special Series: Article One

Suppose that there are totally [N.sub.P] SWG pairs defined in tetrahedron pairs and [N.sub.S] single (half) SWGs defined in boundary (including the nonconformal boundaries) tetrahedrons; thus, the impedance matrix in (6) can be expressed as

Versatile Solver of Nonconformal Volume Integral Equation Based on SWG Basis Function

The shape of M[O.sub.x] is diverse, such as octahedron and tetrahedron. The shape and connection types of M[O.sub.x] are critical to the physical and chemical properties [1-5].

Preparation and Physical and Photocatalytic Activity of a New Niobate Oxide Material Containing Nb[O.sub.4] Tetrahedra

Wensel, "A novel reagent for labelling macromolecules with intensely luminescent lanthanide complexes," Tetrahedron Letters, vol.

Basic Ionic Liquid as Catalyst in Synthesis of Dimethyl 4-(2-(2,6-Bis(methoxycarbonyl)pyridine-4-yl)vinyl)pyridine-2, 6-dicarboxylate

Narukawa's Authagraph got around this with a rather clever method; by taking an actual globe and dividing it into 96 triangles, which are then projected into a tetrahedron. That tetrahedron could then be folded out into a rectangle, creating a flattened version of the globe that is more accurate than any projection so far.

World's 'most accurate map' challenges popular wisdom

Tetrahedron volume structure is a structure in which a volumetric object is divided into regular tetrahedron by adding vertices inside the existing surface mesh model.

Simulation of Deformable Objects Using GLSL 4.3