Definition of estimation in English:

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Pronunciation: /ɛstɪˈmeɪʃ(ə)n/


1A rough calculation of the value, number, quantity, or extent of something: estimations of protein concentrations
More example sentences
  • Thus, the given values for wax layer thickness on leaves are rather rough estimations.
  • 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.
estimate, rough calculation, approximation, educated/informed guess, rough guess, evaluation, assessment, appraisal
informal guesstimate
2 [usually in singular] A judgement of the worth or character of someone or something: the pop star rose in my estimation
More example sentences
  • 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.
  • As I contemplate this revelation, the character improves in my estimation.
assessment, evaluation, judgement, gauging, rating, appraisal, esteem, opinion, view, analysis


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

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