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define - definition and synonyms


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verb [transitive] define pronunciation in British English /dɪˈfaɪn/
Word Forms
present tense
present participledefining
past tensedefined
past participledefined
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  1. 1
    to describe clearly and exactly what something is
    No one has defined the scope of the project.
    The responsibilities of each team member need to be clearly defined.
  2. 2
    to explain the meaning of a word
    Defining the word ‘love’ can be very difficult.
    Manual work is broadly defined as work that you do with your hands.
  3. 4
    to be a feature or quality that shows exactly what someone or something is like
    It is his work that really defines him.
    define someone/something as: the high winds that define a storm as a hurricane

derived word


 define pronunciation in British English adjective
Our roles are all well defined.
a sharply defined image


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

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

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