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Alkaline earth

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

The acid and alkaline earth must be well diffused through the whole dough.
A Dictionary of Arts, Manufactures and Mines Andrew Ure

Sulphuret, a combination of an alkaline earth or metal with sulphur as, Sulphuret of iron, a combination of iron and sulphur.
A Treatise on Domestic Economy Catherine Esther Beecher

It may here be seen how great a resemblance the ancients found between their nitrum, alkaline earth and lime.
A History of Inventions, Discoveries, and Origins, Volume II (of 2) Johann Beckman

An alkaline earth found in petalite, &c., and in small quantities in most mineral waters.
Cooley’s Practical Receipts, Volume II Arnold Cooley

In solutions of the hydrates of the alkali and alkaline earth metals, keratins behave differently.
Animal Proteins Hugh Garner Bennett

It is described as a white, shining metal resembling the other alkaline earth metals.
Alchemy: Ancient and Modern H. Stanley Redgrove

A wire of the metal magnesium burns magnificently in oxygen gas, and forms the alkaline earth magnesia.
The Boy’s Playbook of Science John Henry Pepper

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

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


Read Also:

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  • Alkaline phosphatase

    a phosphatase active in an alkaline medium. alkaline phosphatase n. A phosphatase with an optimum functioning at pH 8.6; it is present throughout the body.

  • Alkaline soil

    noun a soil that gives a pH reaction of 8.5 or above, found esp in dry areas where the soluble salts, esp of sodium, have not been leached away but have accumulated in the B horizon of the soil profile Historical Examples Do any of the nut tree species prefer an acid to an alkaline […]

  • Alkaline tide

    alkaline tide alkaline tide n. A period of urinary neutrality or alkalinity after meals.

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