subtract - definition and synonyms

verb [intransitive/transitive] 

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present tense
present participlesubtracting
past tensesubtracted
past participlesubtracted
  1. 1
    maths to take a number or amount from another number or amount. The symbol for this is – and is called a minus sign

    How much will it be if we subtract the labour costs?

    subtract something from something:

    If you subtract 80 from 100, you get 20.

  2. 2
    to take away a small part of something