noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A regular skew apeirohedron with six hexagons around each vertex, formed by an infinite number of truncated tetrahedron-like cells (specifically, truncated tetrahedra missing their triangle faces, with the resulting triangle-shaped holes joined to form empty spaces in the shape of faceless tetrahedra) in Euclidean 3D space.

Etymology

Short for multiple tetrahedron.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.