alkaline earth

alkaline earth

n 1. (Elements & Compounds) Also called: alkaline earth metal or alkaline earth element any of the divalent electropositive metals beryllium, magnesium, calcium, strontium, barium, and radium, belonging to group 2A of the periodic table 2. (Elements & Compounds) an oxide of one of the alkaline earth metals

al′kaline earth′

n. any of the oxides of barium, radium, strontium, calcium, and, sometimes, magnesium. [1810–20]

Thesaurus

Noun

1.

alkaline earth - any of the bivalent metals of group II of the periodic table (calcium or strontium or barium or magnesium or beryllium)alkaline-earth metalmetal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.