TETRAHEDRON


Meaning of TETRAHEDRON in English

[ ˌtɛtrə'hi:drən , -'hɛd- ]

■ noun ( plural tetrahedra -drə or ~s ) a solid having four plane triangular faces.

Derivatives

tetrahedral adjective

Origin

C16: from late Gk tetraedron , neut. (used asnoun) of tetraedros 'four-sided'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.