Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Noun: tetrahedron (tetrahedrons,tetrahedra)  ,te-tru'hee-drun
  1. Any polyhedron having four plane faces
    "The pyramidal tea bag was shaped like a tetrahedron"

Derived forms: tetrahedra, tetrahedrons

Type of: polyhedron

Encyclopedia: Tetrahedron