Definition of hemihedral in US English:
hemihedral
adjective ˌheməˈhēdrəlˌheməˈhēdrəl
Crystallography Having half the number of planes required for symmetry of the holohedral form.
Example sentencesExamples
- Analysis was complicated by perfect hemihedral twinning, which was masked in intensity statistics by pseudocentering.
- A regular or twin intergrowth between two hemihedral crystals frequently takes place and results in the production of a holohedral form.
- Hexagonal bR crystals of space group P6 3 often exhibit a perfect hemihedral twinning.
- Depending on the hemihedral twin-fraction, there are two different scenarios that must be understood.
- The two types of quartz are distinguished by minor crystal faces, the hemihedral facets, which form a left-handed screw pattern in one set and a right-handed pattern in the other.