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base on

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phrasal verb [transitive] [usually passive]
Word Forms
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present tense
I/you/we/theybase on
he/she/itbases on
present participlebasing on
past tensebased on
past participlebased on
  1. 1
    base something on something to use particular ideas or facts to make a decision, do a calculation, or develop a theory

    The prosecution's case is based largely on evidence from ex-members of the gang.

    Green politics are based on the belief that the resources of the planet are finite.

    Prices are based on two people sharing a room.

  2. 2
    base something on something to use something as a model for a film, piece of writing, or work of art

    He bases his designs on Roman mosaics.

    The film is based on a true story.

See also main entry: base

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