Did you know?

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


 - definitions and thesaurus

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.



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.

noun [countable] medium pronunciation in American English /ˈmidiəm/
Word Forms
  1. 1
    pluralmedia or mediums
    a way of communicating information and ideas, especially to a lot of people, for example newspapers or television

    Both broadcast and print media are carrying the story.

    medium for:

    Radio was the medium for family entertainment before television.

    medium of:

    The T-shirt has become a medium of advertising.

    1. a.
      a particular type of art used as a way of expressing ideas or feelings

      the popularity of video as an artistic medium

      medium of:

      Patients can express their emotions through the medium of drama.

  2. 2
    pluralmedia or mediums
    science a substance that something grows in, exists in, or moves through

    Sand and clay are added to produce the perfect planting medium.

    1. b.
      computing a substance or an object on which computer information is stored or printed

      You may distribute this data by disk, CD, or any other medium.

  3. 4
    [usually singular] something between small and large in size, especially a piece of clothing

    Have you got a medium in this style?

    Synonyms and related words


… a teaching method in which groups of children learn independently using a computer linked to the internet

BuzzWord Article

Word of the Day


a fight

Open Dictionary


a derogatory word used for referring to people in the banking and investment industry who are thought of as taking serious risks in order to increase their own earnings …

add a word


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