Tetrahedron is valid Scrabble Word

Is tetrahedron a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is tetrahedron valid Words with Friends?
Words with Friends YES

11 letters word
15 points in Scrabble
15 points in WWF

Definitions for TETRAHEDRON in dictionary:

NOUN:

a polyhedron that has four faces
a solid having four plane triangular faces; a triangular pyramid.
A solid figure inclosed or bounded by four triangles.
any polyhedron having four plane faces

Words related to TETRAHEDRON

tetrahedra14 tetrahedrons16

Words that contain TETRAHEDRON

tetrahedrons16

How to use TETRAHEDRON in a sentence

We here meet the tetrahedron for the first time, with each angle occupied by a six-atomed group, the atoms arranged as on the end triangles of a prism.
Above the tetrahedron is a balloon-shaped figure, apparently drawn into shape by the attraction of the tetrahedron.
In the tetrahedron four funnels are found, the mouth of each funnel opening on one of its faces.
We have, therefore, only to consider the spikes, pointing to the angles of the enclosing tetrahedron, and the central globe.
To make, out of cardboard, a tetrahedron like one given to him, is a problem which will interest the pupil and serve as a convenient starting-point.
I possess a tetrahedron, or triangular pyramid, formed of six sticks glued together, as shown in the illustration.
This puzzle concerns the painting of the four sides of a tetrahedron, or triangular pyramid.

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