hemisymmetryn.
Crystallography.
Same as hemihedrism n.
ΘΚΠ
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hemihedrism1837
hemihedry1864
hemisymmetry1881
1881 Thudichum Ann. Chem. Med. II Hemisymmetry in the Chemical Constitution of Gelatin.
1895 N. Story-Maskelyne Crystallogr. §271 A few forms exhibit, in the defalcation of their alternate faces, the gyroidal hemi-symmetry, which, however, must be held really to dominate the structure of the entire crystal.
Derivatives
hemisyˈmmetrical adj. hemihedral.
ΚΠ
1895 N. Story-Maskelyne Crystallogr. §280 Hemi-symmetrical crystals afford abundant examples of twin-structure.
This entry has not yet been fully updated (first published 1898; most recently modified version published online June 2019).
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n.1881