Hĕm'i-trōpe1, a.
a. [Fr. hémitrope; from Gr. ἡμι, half, and τρέπειν, to turn, τρόπος, turn.]
Sense 1. Turned half round; half inverted.
Sense 2. (Crystallog.) Having a compound structure, which may be imitated by bisecting a crystal and revolving one half 180° (or in some cases 120°), and then re-uniting the halves. Dana.