Hem"i*trope (?), a. [Hemi- + Gr. to turn: cf. F. h'emitrope.]
Half turned round; half inverted; Crystallog. having a twinned structure.
© Webster 1913.
Hem"i*trope, n.
That which is hemitropal in construction; Crystallog. a twin crystal having a hemitropal structure.
© Webster 1913.