[ al-kuh-lahyn-urth, -lin- ]
/ ˈæl kəˌlaɪnˈɜrθ, -lɪn- /
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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Medical definitions for alkaline-earth metal
Any of a group of metallic elements including calcium, strontium, magnesium, barium, beryllium, and radium.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for 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 Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.