- alkaline-earth metal
- nounany of the bivalent metals of group II of the periodic table (calcium or strontium or barium or magnesium or beryllium)• Syn: ↑alkaline earth
* * *noun: any of the metals of group II of the periodic table whose oxides are the alkaline earths
* * */al"keuh luyn'errth", -lin-/, Chem.any of the group of bivalent metals including barium, radium, strontium, calcium, and, usually, magnesium, the hydroxides of which are alkalis but less soluble than those of the alkali metals.[1900-05]
Useful english dictionary. 2012.