Twinning

Definition of Twinning

Twin´ning

n.

1.

(Crystallog.) The assemblage of two or more crystals, or parts of crystals, in reversed position with reference to each other in accordance with some definite law; also, rarely, in artificial twinning (accomplished for example by pressure), the process by which this reversal is brought about.

Polysynthetic twinning
repeated twinning of crystal lamellæ, as that of the triclinic feldspars.

Repeated twinning
twinning of more than two crystals, or parts of crystals.

Twinning axis
See the Note under Twin, n.

Related Words

biparous, multiparous

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