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noun

estimation

/ˌɛstɪˈmeɪʃən/  ·  say it: ES·tuh·MAY·shuhn

a judgment of value or amount

In Nuance & Precision

In more detail

1. (noun) a rough calculation or judgment of a value, size, amount, or cost, rather than an exact measurement

2. (noun) the process of making such a calculation or judgment

3. (noun) a statement of the likely cost of work or services before it is done

Examples

How to use estimation

Estimation refers to making a judgment about value, size, or cost when exact information is unavailable. It is commonly used in professional contexts (construction quotes, business forecasts) and everyday situations requiring approximation. Unlike 'estimate' (which emphasizes the result), 'estimation' emphasizes the process or act of judging.

Common phrases

Synonyms

approximation · assessment · evaluation · guess · calculation

Opposites

exactness · precision · measurement

Word family

estimate (verb/noun) · estimator (noun) · underestimate (verb) · overestimate (verb)

A common mistake

Learners sometimes use 'estimation' when 'estimate' would be more natural; 'estimation' is less frequently used as a standalone noun than 'estimate' in modern English.

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