noun
1. : the oxide of any of a group of bivalent strongly basic metals comprising calcium, strontium, and barium and, according to some, magnesium, radium, and less often beryllium
2. : alkaline-earth metal
noun
1. : the oxide of any of a group of bivalent strongly basic metals comprising calcium, strontium, and barium and, according to some, magnesium, radium, and less often beryllium
2. : alkaline-earth metal
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012