Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “alkali”

alkali

noun [C or U] uk   /ˈæl.kəl.aɪ/ (plural alkalis) specialized us  
a substance that has the opposite effect or chemical behaviour to an acidTypes of chemicalSpecific chemicals, chemical compounds and gasesSubstances and structures in the body
alkaline
adjective uk   /ˈæl.kəl.aɪn/ us  
Some plants will not grow in very alkaline soils.Types of chemicalSpecific chemicals, chemical compounds and gasesSubstances and structures in the body
(Definition of alkali from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of alkali?
Add Cambridge dictionaries to your browser to your website

Definitions of “alkali” in other dictionaries

Word of the Day

aptitude

a natural ability or skill

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More