Definition of approximation in US English:

approximation

noun

  • 1A value or quantity that is nearly but not exactly correct.

    ‘these figures are only approximations’
    • ‘Most of the work in quantum mechanics was in the Galilean (or non-relativistic) approximation.’
    • ‘The data flow for each approximation mode is also shown.’
    • ‘The main question is how close this approximation is to the actual quasistationary distribution.’
    • ‘First, the asymptotic results provide a very reasonable approximation for the velocity even for a much lower level of cooperativity.’
    • ‘Their derivations will extend to cover the present cases, given the same approximations made above.’
    • ‘The potential of mean force can also be derived from Eq. 18 based on the harmonic approximation.’
    • ‘To compare behavioral responses among regions, we used Kruskal-Wallis tests, which use chisquare approximations.’
    • ‘In the Appendix, we use small v approximations to derive simple analytic approximations for the quantitative results from the models.’
    • ‘Another weakness was that the assumed values for portion sizes, distributions of fish species in meals, and food contents of nutrients are only approximations to the true values.’
    • ‘The dense-map approximations are too conservative and thus result in power loss, while the sparse-map approximations tend to be too liberal.’
    • ‘The approximations are not bad (giving errors of around 20 %), but this situation is hardly satisfactory.’
    • ‘We can make this reasoning more precise with the Markov chain approximation.’
    • ‘Simulations show that these approximations perform reasonably well over a surprisingly broad set of parameters.’
    • ‘Using a continuous-time approximation, the transition probability from the wild-type allele to the best available allele is’
    • ‘As a first approximation of winter range, I plotted museum specimen records by month on maps of the Western Hemisphere.’
    • ‘Here's a nice little political survey which gives you an approximation of where you are on the political spectrum.’
    • ‘The approximations provide conservative control of the genome-wise type I error rate.’
    • ‘The translog form provides a second-order approximation of the true cost function at a point.’
    • ‘What he is talking about is not an approximation to the Golden Mean.’
    • ‘Therefore, as a first approximation, we considered all ionizable residues in their neutral forms.’
    estimate, estimation, guess, conjecture, rough calculation, rough idea, surmise
    semblance, outward appearance, likeness, resemblance, similarity, correspondence, comparison
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    1. 1.1 A thing that is similar to something else, but is not exactly the same.
      ‘the band smashed up their equipment in an approximation of rock star behavior’
      • ‘Thus, the classic Kok model is just convenient first-order approximation to the real case.’
      • ‘The Montessori environment, though wonderful in many ways, often is just an approximation of what we already have in our homes.’
      • ‘Some are based on European approximations of local African place names - often such bastardised versions of the originals that they are barely recognisable.’
      • ‘Previously published methods for deriving Q have used eigen-decomposition of an approximation to P (t).’
      • ‘The current difficulties of the Ukrainian government in achieving approximation of the Law of Ukraine with the Law of the European Union.’
      • ‘I could find the words that would get my message through with some approximation of what I actually mean.’
      • ‘For him, translation requires an act of engagement that goes much deeper than a word-for-word approximation.’
      • ‘Rhuddlan was the closest approximation to a town in pre-Norman Wales during its brief periods under Welsh rule.’
      • ‘Matheson's method does give a very close approximation to the situation in 1890.’
      • ‘Due to the nature of the language, some of these translations are approximations.’
      • ‘Once Fido performs even a close approximation of the trick a reward follows.’
      • ‘User's attitudes also had to be examined in order to assess whether the approximations in the animation were satisfactory.’
      • ‘Most pocket cameras have a separate viewfinder: what you see is an approximation of what the lens is seeing.’
      • ‘This approximation was justified by the argument that the relative lengths of any two segments are only very weakly correlated.’
      • ‘At the time Corps engineers called their approximation a standard project hurricane (SPH), equivalent to what today would be called a fast-moving category 3 storm.’
      • ‘Without a fully linear structure to the economy, at best an inflation index is an approximation.’
      • ‘Computer researcher Laurent Mathy from Lancaster University points out that " simulations only give you an approximation of reality.’
      • ‘The story, which is performed in an approximation of a Beijing Opera style, is simple.’
      • ‘For participants in the glue group, similar approximation was achieved with single circumferential application of tissue glue.’
      • ‘Consisting of basic shapes and pieces lifted from existing ships, it's a very loose approximation of what the final ship mesh will look like.’
      semblance, outward appearance, likeness, resemblance, similarity, correspondence, comparison
      View synonyms

Pronunciation

approximation

/əˌpräksəˈmāSH(ə)n//əˌprɑksəˈmeɪʃ(ə)n/