Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “subtraction”


noun [C/U]  /səbˈtræk·ʃən/ us  
mathematics the process of taking one number or amount away from another number or amount: [U] The test involves simple addition and subtraction.
(Definition of subtraction from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of subtraction?
Add Cambridge dictionaries to your browser to your website

More American English definitions for “subtraction”

Definitions of “subtraction” in other dictionaries

Word of the Day

beer mat

a small piece of cardboard that you put under a glass to protect a table surface in a pub or bar

Word of the Day


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