alkaline earth


noun Chemistry.

any of the oxides of barium, radium, strontium, calcium, and, sometimes, magnesium.

Origin of alkaline earth

First recorded in 1810–20

Example sentences from the Web for alkaline earth

British Dictionary definitions for alkaline earth

alkaline earth

noun

Also called: alkaline earth metal, alkaline earth element any of the divalent electropositive metals beryllium, magnesium, calcium, strontium, barium, and radium, belonging to group 2A of the periodic table
an oxide of one of the alkaline earth metals

Medical definitions for alkaline earth

alkaline earth

n.

The oxides of calcium, strontium, radium, and barium, and sometimes magnesium.