空くう間かん群ぐん

noun

space group

Technical term in crystallography and mathematics; refers to the symmetry group of a crystal structure in three dimensions.

• 結けっ晶しょう構こう造ぞうは230種しゅ類るいの空くう間かん群ぐんのいずれかに分ぶん類るいされる。

  Crystal structures are classified into one of the 230 space groups.