1-Stop Dictionary Reference

Tetrahedron

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noun. A polyhedron with four faces.

The Century Dictionary and Cyclopedia

noun. A solid comprehended under four plane faces; especially, the regular tetrahedron, or triangular pyramid having its base and sides equilateral triangles.

the GNU version of the Collaborative International Dictionary of English

noun. A solid figure inclosed or bounded by four triangles.

noun. a solid bounded by four equal equilateral triangles; one of the five regular solids.

Wiktionary, Creative Commons Attribution/Share-Alike License

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

WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

noun. any polyhedron having four plane faces

Word Usage

"A tetrahedron is a good model for e.g. a carbon atom in a molecular form, and the tighter the "packing," the tighter the molecular bonds."

cross-reference

orthogonal tetrahedron polar tetrahedron six-faced tetrahedron tetrahedron of möbius truncated tetrahedron

Hypernym

Words that are more generic or abstract

polyhedron

Rhyme

Words with the same terminal sound

octahedron polyhedron

Same Context

Words that are found in similar contexts

Sphynx address banqueting-room camp' counterstroke

variant

tetrahedra