tetartohedral

American

[ti-tahr-toh-hee-druhl] / tɪˌtɑr toʊˈhi drəl /

adjective

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

tetartohedral British

/ tɪˌtɑːtəʊˈhiːdrəl /

adjective

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

tetartohedralism noun
tetartohedrally adverb
tetartohedrism noun

Etymology

Origin of tetartohedral

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various

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

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various

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

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023