Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “proportion”


noun [C/U]    /prəˈpɔr·ʃən/
a part or share of the whole , or the relationship between one thing and another in size , amount , or degree : [C] The proportion of the population that is over 65 has been growing . [pl] The occurrence of the disease has reached epidemic proportions. Proportion is also the right relationship between one thing and another: [U] His anger was out of all proportion to the offense (= was much too strong ). art Proportion is also the correct relationship of the parts of a work of art to each other, especially in their size . mathematics A proportion is also a equation (= mathematical statement ) that shows two ratios (= comparisons ) are equal .
(Definition of proportion noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of proportion

Definitions of “proportion” in other dictionaries

Word of the Day


a skilled and trained cook who works in a hotel or restaurant, especially the most important cook

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