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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 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for alkaline earth

alkaline earth

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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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alkaline earth in Medicine

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

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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