Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “supplement”

See all translations

supplement

noun [C] uk   /ˈsʌp.lɪ.mənt/ us  
C2 something that is added to something else in order to improve it or complete it; something extra: The doctor said she should be taking vitamin supplements. The money I get from teaching evening classes provides a supplement to my main income. We paid a supplement (= an extra amount of money) so that we could have a cabin on board the ship. a part of a magazine or newspaper, either produced separately or as part of the magazine or newspaper: The newspaper publishes a sports supplement every Monday. an extra part of a book, either produced separately or included at the end of the book, containing information that was not available when the book was first published: There is a supplement to the dictionary containing new words.

supplement

verb [T] uk   /ˈsʌp.lɪ.ment/ us  
C2 to add something to something to make it larger or better: He supplements (= adds to) his income by working in a bar in the evening. Some vegetarians like to supplement their diets with iron.
(Definition of supplement from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of supplement?
Add Cambridge dictionaries to your browser to your website

More meanings of “supplement”

Definitions of “supplement” in other dictionaries

Word of the Day

sail

When a boat or a ship sails, it travels on the water.

Word of the Day

Byronic, Orwellian and Darwinian: adjectives from names.

by Liz Walter,
April 15, 2015
Becoming an adjective is a strange kind of memorial, but it is often a sign of a person having had real influence on the world. Science is full of examples, from Hippocrates, the Greek medic born around 460 BC, who gave his name to the Hippocratic Oath still used by doctors today,

Read More 

dumbwalking noun

April 20, 2015
walking slowly, without paying attention to the world around you because you are consulting a smartphone He told me dumbwalking probably wouldn’t be a long-term problem.

Read More