Polysynthetic twinning(redirected from Crystal twinning)
Also found in: Encyclopedia, Wikipedia.
|(Min.)||repeated twinning, like that of the triclinic feldspar, producing fine parallel bands in alternately reversed positions.|
|repeated twinning of crystal lamellæ, as that of the triclinic feldspars.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.