• (n.) That which is hemitropal in construction; (Crystallog.) a twin crystal having a hemitropal structure. • (a.) Half turned round; half inverted; (Crystallog.) having a twinned structure.
Hem'i·trope adjective [ Hemi- + Greek ... to turn: confer French hémitrope .] Half turned round; half inverted; (Crystallog.) having a twinned structure.