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definitions

alkaline

[al-kuh-lahyn, -lin]
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SEE MORE SYNONYMS FOR alkaline ON THESAURUS.COM

adjective Chemistry.

of or like an alkali.
containing an alkali.
having the properties of an alkali.
having a pH value greater than 7.Compare acid(def 5c).

RELATED WORDS

soluble, salty, acrid, alkali, bitter, caustic, alkalescent, antacid

Nearby words

  1. alkali-loving,
  2. alkalic,
  3. alkalify,
  4. alkalimeter,
  5. alkalimetry,
  6. alkaline earth,
  7. alkaline earths,
  8. alkaline phosphatase,
  9. alkaline soil,
  10. alkaline tide

Origin of alkaline

First recorded in 1670–80; alkal(i) + -ine1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for alkaline

British Dictionary definitions for alkaline

alkaline

adjective

having the properties of or containing an alkali
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
Word Origin and History for alkaline

alkaline

adj.

1670s, "pertaining to alkalis," from alkali + -ine (1). Of soils, attested from 1850.

Online Etymology Dictionary, © 2010 Douglas Harper
Medicine definitions for alkaline

alkaline

[ăl′kə-lĭn, -līn′]

adj.

Of, relating to, or containing an alkali.
Having a pH greater than 7.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for alkaline

alkaline

[ăl′kə-lĭn, -līn′]

Capable of neutralizing an acid. Bases are alkaline.
Relating to an alkali compound.
Having a pH greater than 7.
Having a relatively low concentration of hydrogen ions.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.