creating two offspring at the same time
- The assemblage of several crystals or elements of crystals in reversed position with reference to each other relative to some definite legislation also hardly ever in artificial twinning achieved for example by stress the process where this reversal is brought about
- of Twin
- The assemblage of two or more crystals, or parts of crystals, in reversed position with regards to both in conformity with some definite legislation; in addition, hardly ever, in synthetic twinning (accomplished as an example by force), the procedure by which your reversal is caused.
(p. pr. & vb. n.) of Twin
- (n.) The assemblage of a couple of crystals, or parts of crystals, in corrected position with regards to each other according to some definite law; additionally, rarely, in artificial twinning (carried out for instance by stress), the process wherein this reversal is brought about.
In the article Crystallography the nature and behaviour of twinned crystals receives full treatment; here it is sufficient to say that when the planes and axes of twinning are planes and axes of symmetry, a twin would exhibit higher symmetry (but remain in the same crystal system) than the primary crystal; and, also, if a crystal approximates in its axial constants to 'a higher system, mimetic twinning would increase the approximation, and the crystal would be pseudo-symmetric.