Did you know?

Click any word in a definition or example to find the entry for that word

compound - definition and synonyms

 
 
Close

What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

Close

Thesaurus

The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

more
noun compound pronunciation in British English /ˈkɒmpaʊnd/
Word Forms
Close
singularcompound
pluralcompounds
  • Facebook
  • Twitter
  1. 1
    [countable] chemistry a chemical substance that consists of two or more elements that together form a molecule. Each different compound has a fixed ratio of elements. For example the water compound (H2O) consists of two hydrogen atoms and one oxygen atom
    Why do chemical compounds behave as they do?
    Water is a compound of hydrogen and oxygen.
    1. a.
      [countable/uncountable] something that consists of two or more substances mixed together
      a herbal compound used for treating headaches
  2. 2
    [countable] a combination of things
    John and Steve working together? That’s a lethal compound.

ruburb

an area in the countryside where there are both housing developments and farms, and many people travel to work in nearby cities

BuzzWord Article

Open Dictionary

troll factory

a company that pays its employees to write online comments in favour or against somebody or something posing as ordinary Internet users

add a word

Blog

A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog