noun
: a crystal system (as in the right square prism) characterized by three axes at right angles of which only the two lateral axes are equal — compare rhombohedral system ; see crystal system illustration
noun
: a crystal system (as in the right square prism) characterized by three axes at right angles of which only the two lateral axes are equal — compare rhombohedral system ; see crystal system illustration
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012