noun
: the monoxide of tin SnO that is obtained as dark lustrous crystals usually blue-black but sometimes varying in shade (as from brown and red to dark green) and that forms stannic oxide when heated in air
noun
: the monoxide of tin SnO that is obtained as dark lustrous crystals usually blue-black but sometimes varying in shade (as from brown and red to dark green) and that forms stannic oxide when heated in air
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012