approximation - definition and synonyms

noun [countable/uncountable] 

Your browser doesn’t support HTML5 audio

/əˌprɒksɪˈmeɪʃ(ə)n/
singularapproximation
pluralapproximations
  1. 1
    a nearly exact calculation, amount, number, time etc
    approximation of:

    I can only give you an approximation of the cost.

  2. 2
    something that is similar to something else but is not exactly the same
    approximation of:

    That’s a reasonable approximation of what happened.