Did you know?

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

series - definition and synonyms


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] [usually singular] series pronunciation in British English /ˈsɪəriːz/
Word Forms
  • Facebook
  • Twitter
  1. 1
    a set of similar things that follow one after another
    series of: We’ll need to do a series of tests before we do anything else.
    a strange series of events leading up to the murder
  2. 2
    a set of television or radio programmes that are all about a particular subject, person, or group of people
    a hit television series
    the first/second/last etc in a series: Tonight’s programme is the second in a three-part series.
  3. 4
    a set of matches played over a period of time between two teams
    The team were preparing for the series against England.
    a Test series (=an international cricket competition)



a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

BuzzWord Article

Open Dictionary


an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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