Definition of estimation in English:



  • 1A rough calculation of the value, number, quantity, or extent of something.

    ‘estimations of protein concentrations’
    • ‘Quantitative estimations require more sophisticated approaches.’
    • ‘Moreover, the figures of nine per cent and five per cent were estimations by federal officials, who lacked hard statistical data upon which to base their percentages.’
    • ‘While these estimations are rough, we report them to give an idea of where these clubs belong on the Top 100.’
    • ‘Thus, the given values for wax layer thickness on leaves are rather rough estimations.’
    • ‘The Bench examined Sergeant Henderson's watch and decided that the defendant was wrong in his estimation of its value.’
    • ‘This model was developed to provide UV irradiance calculations and UVI estimations with high accuracy for different atmospheric, temporal and geographical conditions.’
    • ‘It also results in more conservative estimations of brand values than other methods: this can be a problem when those who are in the market to acquire a brand seek valuation methods that justify bidding a higher price to win the deal.’
    • ‘This system will support passive defense and attack operations by providing impact point predictions and launch point estimations.’
    • ‘All statistical estimations were computed using the latest software.’
    • ‘As expected, estimations obtained with 1 million simulations are more accurate than those obtained with 100,000 simulations.’
    estimate, rough calculation, approximation, educated guess, informed guess, rough guess, evaluation, assessment, appraisal
    View synonyms
  • 2usually in singular A judgement of the worth or character of someone or something.

    ‘the pop star rose in my estimation’
    • ‘As I contemplate this revelation, the character improves in my estimation.’
    • ‘Instead, right-to-die advocates project their own gloomy estimation of the worth of human life on to these poor souls.’
    • ‘Such shrewdness is based on a full knowledge and estimation of any situation.’
    • ‘He has far too exalted an estimation of human reason and far too optimistic a view of human nature.’
    assessment, evaluation, judgement, gauging, rating, appraisal, esteem, opinion, view, analysis
    View synonyms


Late Middle English (originally in the sense ‘comprehension, intuition’, also ‘valuing, a valuation’): from Latin aestimatio(n-), from aestimare ‘determine, appraise’ (see estimate).