## EnglishEdit

### EtymologyEdit

*poly-* + *tetrahedron*

### NounEdit

**polytetrahedron** (*plural* **polytetrahedra**)

- A uniform convex polychoron made up of 600 tetrahedral cells; a hexacosichoron.
- A connected set of regular tetrahedra, the 3-dimensional analogue of a polyiamond.