estimator

/ˈɛs.tɪˌmeɪ.tə//ˈɛs.təˌmeɪ.tɚ/

中文释义来自 ECDICT

词干

后缀

-or: Creates an agent noun, often from a verb, indicating a person or object (often machines or parts of them) that do the verb or part of speech with which they are formed. · (electrical science) Appended to the names of members of classes of components, especially those that have an extensive property name of the same root suffixed with -ance

From Latin aestimātor; equivalent to estimate +‎ -or.

1A person who estimates, especially one who estimates costs
2(mathematics) A function of a random sample of a population used to estimate some parameter of the whole population