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Noun: overestimation  ,ow-vu(r),es-ti'mey-shun
  1. An appraisal that is too high
    - overestimate, overvaluation, overappraisal
  2. A calculation that results in an estimate that is too high
    - overestimate, overrating, overreckoning

Derived forms: overestimations

Type of: appraisal, approximation, estimate, estimation, idea