hemihedral

[ hem-i-hee-druhl ]

adjective

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

hemihedral

/ ˌhɛmɪˈhiːdrəl /

adjective

1. (of a crystal) exhibiting only half the number of planes necessary for complete symmetry

Other Words From

• hemi·hedral·ly adverb

Word History and Origins

Origin of hemihedral¹

First recorded in 1830–40; hemi- + -hedral

Example Sentences

In this species the hemihedral variety, Hemiaspis, often occurs.

From Project Gutenberg

In this way a mixture of the two asparagines was obtained, which were separated by picking out the hemihedral crystals.

From Project Gutenberg

All the forms are pedions, each consisting of a single plane; they are thus hemihedral with respect to crystals of the last class.

From Project Gutenberg

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

From Project Gutenberg

The occurrence of hemihedral faces was considered by Pasteur to be a sufficient criterion for an optically active substance.

From Project Gutenberg