Definitions for tetrahedron
ˌtɛ trəˈhi drəntetra·he·dron

Princeton's WordNetRate this definition:0.0 / 0 votes

1. tetrahedronnoun

   any polyhedron having four plane faces

WiktionaryRate this definition:5.0 / 1 vote

1. tetrahedronnoun

   a polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral triangles, is one of the Platonic solids.

2. Etymology: From τετράεδρον, from τετράς + ἕδρα.

WikipediaRate this definition:0.0 / 0 votes

1. Tetrahedron

   In geometry, a tetrahedron (plural: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners. The tetrahedron is the simplest of all the ordinary convex polyhedra.The tetrahedron is the three-dimensional case of the more general concept of a Euclidean simplex, and may thus also be called a 3-simplex. The tetrahedron is one kind of pyramid, which is a polyhedron with a flat polygon base and triangular faces connecting the base to a common point. In the case of a tetrahedron the base is a triangle (any of the four faces can be considered the base), so a tetrahedron is also known as a "triangular pyramid". Like all convex polyhedra, a tetrahedron can be folded from a single sheet of paper. It has two such nets.For any tetrahedron there exists a sphere (called the circumsphere) on which all four vertices lie, and another sphere (the insphere) tangent to the tetrahedron's faces.

ChatGPTRate this definition:0.0 / 0 votes

1. tetrahedron

   A tetrahedron is a polyhedron with four faces. It is the simplest of all the ordinary convex polyhedra and the only one that has fewer than 5 faces. The faces of a tetrahedron are usually triangles, and the corresponding solid figure has four vertices and six edges.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Tetrahedronnoun

   a solid figure inclosed or bounded by four triangles

WikidataRate this definition:0.0 / 0 votes

1. Tetrahedron

   In geometry, a tetrahedron is a polyhedron composed of four triangular faces, three of which meet at each vertex. It has six edges and four vertices. The tetrahedron is the only convex polyhedron that has four faces. The tetrahedron is the three-dimensional case of the more general concept of a Euclidean simplex. The tetrahedron is one kind of pyramid, which is a polyhedron with a flat polygon base and triangular faces connecting the base to a common point. In the case of a tetrahedron the base is a triangle, so a tetrahedron is also known as a "triangular pyramid". Like all convex polyhedra, a tetrahedron can be folded from a single sheet of paper. It has two nets. For any tetrahedron there exists a sphere such that the tetrahedron's vertices lie on the sphere's surface.

Matched Categories

1. • Polyhedron

Usage in printed sourcesFrom: 

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How to pronounce tetrahedron?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

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   Zira

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   Oliver

   British

   Wendy

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   Fred

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   Tessa

   South African

How to say tetrahedron in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of tetrahedron in Chaldean Numerology is: 8

2. Pythagorean Numerology

   The numerical value of tetrahedron in Pythagorean Numerology is: 2

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=tetrahedron
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Tetrahedron
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Tetrahedron
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/tetrahedron
6. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=tetrahedron
7. ^ Usage in printed sources
   https://books.google.com/ngrams/graph?content=tetrahedron