alkali

play
noun al·ka·li \ˈal-kə-ˌlī\

Definition of alkali

plural

alkalies

or

alkalis

  1. 1 :  a soluble salt obtained from the ashes of plants and consisting largely of potassium or sodium carbonate; broadly :  a substance (as a hydroxide or carbonate of an alkali metal) having marked basic properties — compare base 7a

  2. 2 :  alkali metal

  3. 3 :  a soluble salt or a mixture of soluble salts present in some soils of arid regions in quantity detrimental to agriculture

Origin and Etymology of alkali

Middle English, from Medieval Latin, from Arabic al-qili the ashes of the plant saltwort


First Known Use: 14th century

Other Chemical Engineering Terms


ALKALI Defined for English Language Learners

alkali

play
noun al·ka·li \ˈal-kə-ˌlī\

Definition of alkali for English Language Learners

  • chemistry : a substance that has a bitter taste and that forms a salt when mixed with an acid


ALKALI Defined for Kids

alkali

play
noun al·ka·li \ˈal-kə-ˌlī\

Definition of alkali for Students

plural

alkalies

or

alkalis

  1. 1 :  a substance that has a bitter taste and reacts with an acid to form a salt :  base

  2. 2 :  a salt or a mixture of salts sometimes found in large amounts in the soil of dry regions


Medical Dictionary

alkali

play
noun al·ka·li \ˈal-kə-ˌlī\

Medical Definition of alkali

plural

alkalies

or

alkalis

  1. :  a substance (as a hydroxide or carbonate of an alkali metal) having marked basic properties—compare base


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