tetartohedral

[ti-tahr-toh-hee-druhl]

adjective

1. (of a crystal) having one fourth the planes or faces required by the maximum symmetry of the system to which it belongs.

tetartohedral

/ tɪˌtɑːtəʊˈhiːdrəl /

adjective

1. (of a crystal) having one quarter of the number of faces necessary for the full symmetry of its crystal system

Other Word Forms

• tetartohedrally adverb
• tetartohedralism noun
• tetartohedrism noun

Word History and Origins

Origin of tetartohedral¹

1855–60; < Greek tétarto ( s ) one fourth + -hedral

Word History and Origins

Origin of tetartohedral¹

C19: from Greek tetartos one fourth + _-hedral

Example Sentences

This is bounded by twelve irregular pentagons, and is a tetartohedral or quarter-faced form of the hexakis-octahedron.

From Project Gutenberg

These systems, however, only represented holohedral forms, leaving the hemihedral and tetartohedral classes to be explained.

From Project Gutenberg

Crystals belonging to many of the hemihedral and tetartohedral classes of the six systems of crystallization are devoid of a centre of symmetry.

From Project Gutenberg