TETRAHEDRON


Meaning of TETRAHEDRON in English

n. (pl. tetrahedra or tetrahedrons) a four-sided solid; a triangular pyramid. tetrahedral adj.

[ late Gk tetraedron neut. of tetraedros four-sided (as TETRA-, -HEDRON) ]

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.