Crystall.
a point within a crystal through which any straight line extends to points on opposite surfaces of the crystal at equal distances. Also called inversion center . Cf. symmetry element .
Crystall.
a point within a crystal through which any straight line extends to points on opposite surfaces of the crystal at equal distances. Also called inversion center . Cf. symmetry element .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012