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Definition of estimator

estimator

/ˈɛstɪˌmeɪtər/
es · ti · ma · tor
Plural:estimators
•
Adjective:estimative
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estimator Lexical Profile

estimator Game Scores & Validity

• noun

1

A person whose job is to calculate the approximate cost, materials, time, or labor required for a project, especially in construction, manufacturing, or insurance.

Example

"The construction company hired an experienced estimator to prepare a competitive bid for the new highway project."

2

In statistics, a rule, formula, or mathematical function used to infer the value of an unknown population parameter from observed sample data.

Example

"The sample mean serves as an unbiased estimator of the true population mean."

Synonyms
View all synonyms for estimator

• Nearby Words

estimable
estimate
estimation
estimator
estonia
estrange
estranged

Word Origin & Etymology

First recorded in the late 16th century, derived from the verb 'estimate' (from Latin 'aestimatus', past participle of 'aestimare', meaning 'to value' or 'to appraise') combined with the agentive suffix '-or'.

Cite this Entry

Wordmom. (2026). Definition of Estimator. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/estimator
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