tetrahedral

[ te-truh-hee-druhl ]

adjective

1. pertaining to or having the form of a tetrahedron.
2. having four lateral planes in addition to the top and bottom.

Other Words From

• tetra·hedral·ly adverb

Word History and Origins

Origin of tetrahedral¹

First recorded in 1785–95; tetrahedr(on) + -al ¹

Example Sentences

To get a sense of why this fact about geodesics is true on four of the five Platonic solids, we’ll take a “tumbling” approach to these paths, and we’ll switch over to a tetrahedral world where tumbling paths are a little easier to study.

From Quanta Magazine

To the south, 27 E., is a tetrahedral peak, which our guide called Ngoma-dingding.

From Project Gutenberg

The spores of this species are spheroid-tetrahedral, the three radiating angles marked with slender vittæ, or bands.

From Project Gutenberg

It crystallizes in the cubic system; with regular octahedral and tetrahedral cleavages; spec.

From Project Gutenberg

The tetrahedral or Reye complex is the simplest and best known of proper quadratic complexes.

From Project Gutenberg

Polar spines very thick and short, tetrahedral, one-fourth as long and broad as the major axis.

From Project Gutenberg