1. Plural of hemitrope; crystals or mineral specimens that are twinned in such a way that one part is rotated 180 degrees relative to the other about a specific axis.
Usage: crystallography; mineralogy; technical

Examples

• The geologist examined the hemitropes under the microscope to understand their crystal structure.
• Hemitropes are common in certain mineral species and help identify their crystallographic properties.
• The collection included several hemitropes that demonstrated perfect twinning patterns.