[alkaline earth metal] n (ca. 1903): any of the bivalent strongly basic metals of group II of the periodic table comprising beryllium, magnesium, calcium, strontium, barium, and radium--called also alkaline earth--see periodic table table
ALKALINE EARTH METAL
Meaning of ALKALINE EARTH METAL in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012