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alkaline-earth metal
[ al-kuh-lahyn-urth, -lin- ]
/ ˈæl kəˌlaɪnˈɜrθ, -lɪn- /
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noun Chemistry.
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.
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Origin of alkaline-earth metal
First recorded in 1900–05
Words nearby alkaline-earth metal
alkali metaprotein, alkalimeter, alkalimetry, alkaline, alkaline earth, alkaline-earth metal, alkaline phosphatase, alkaline soil, alkalinity, alkali rock, alkali soil
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Scientific definitions for alkaline-earth metal
alkaline-earth metal
Any of a group of metallic elements that includes beryllium, magnesium, calcium, strontium, barium, and radium. Because the alkaline-earth metals have two electrons in their outer shell, they react easily with other elements and are found in nature only in compounds. See Periodic Table.
The American Heritage® Science Dictionary
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