tetrahedron
noun
a solid contained by four plane faces; a triangular pyramid.
tetrahedra
-
pluralof tetrahedron.plural
The grammatical form denoting more than one person, place, thing, or idea.
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.
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
In silicon dioxide, each silicon atom links to four oxygen atoms by single bonds directed toward the corners of a regular tetrahedron, and SiO4 tetrahedra share oxygen atoms.
From Textbooks ● Feb. 14, 2019
In nearly all silicates, sp3-hybridized silicon atoms occur at the centers of tetrahedra with oxygen at the corners.
From Textbooks ● Feb. 14, 2019
In amphibole structures, the silica tetrahedra are linked in a double chain that has an oxygen-to- silicon ratio lower than that of pyroxene, and hence still fewer cations are necessary to balance the charge.
From Textbooks ● Jan. 1, 2015
That matter whose smallest particles are regular tetrahedra, said Philolaus, is fire.
From A Critical History of Greek Philosophy by W. T. (Walter Terence) Stace
