Hermann-Mauguin symbol

[ hur-muh n-moh-gan, her-mahn- ]
/ ˈhɜr mən moʊˈgæn, ˈhɛr mɑn- /

noun Crystallography.

a notation for indicating a particular point group.

Origin of Hermann-Mauguin symbol

after Carl Hermann (1898–1961), German crystallographer and Charles Mauguin (1878–1937), French crystallographer