es·​ti·​ma·​tion | \ˌe-stə-ˈmā-shən \

Definition of estimation 

1 : judgment, opinion a poor choice in my estimation

2a : the act of estimating something

b : the value, amount, or size arrived at in an estimate

3 : esteem, honor

Keep scrolling for more

Synonyms & Antonyms for estimation


account, admiration, appreciation, esteem, favor, regard, respect



Visit the Thesaurus for More 

Examples of estimation in a Sentence

This is not, in my estimation, an efficient use of our resources. She went down in her supporters' estimation after she voted against the plan. Planning the project requires careful cost estimation.
See More

Recent Examples on the Web

Hermann argues that a trip in an electric car will save you from having to visit gas stations, which are universally unpleasant in his estimation. Vlad Savov, The Verge, "The Mercedes-Benz EQC SUV’s best feature are its three USB-C ports," 4 Oct. 2018 Essential to the project is that, in Harris's estimation, Rihanna, for Leo, will always been the one who got away. Bridget Read, Vogue, "What If Rihanna and Leonardo DiCaprio Are Secretly the Star-Crossed Lovers of Our Time?," 17 Aug. 2018 While the former laundress was elbowing her way through the medieval patriarchy, a young man named Raymond of Campagno was similarly rising in the king’s estimation. Anne Thériault, Longreads, "Queens of Infamy: Joanna of Naples," 3 July 2018 The shot-chart data Schreefer uses appears to be entered by hand, so the length of shots is an estimation. Jesse Newell, kansascity, "We're looking at deep three-pointers all wrong in college basketball. Here's why | The Kansas City Star," 17 May 2018 Or that Middle Tennessee or Northern Iowa are more than just geographic estimations? David Haugh,, "Loyola can be the team that captures America's imagination this year," 12 Mar. 2018 Prices can vary over time and prices listed below are an estimation and aggregation based on reference articles and hands-on experience of Experian cyber analyst the last two years. Brian Stack, Fox News, "Paid Content: Here's how much your personal information is selling for on the dark web," 2 Feb. 2018 Critical shortages of food, fuel and medicine would open up within two weeks, by the government’s own estimation. Andrew Sullivan, Daily Intelligencer, "Did Trump Just Help Stop Brexit?," 13 July 2018 That move comes just months after Valve started protecting individual Steam usage data by default, cutting off the previous estimation method used by Steam Gauge and Steam Spy. Kyle Orland, Ars Technica, "Valve leaks Steam game player counts; we have the numbers," 6 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'estimation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of estimation

14th century, in the meaning defined at sense 1

Keep scrolling for more

Learn More about estimation

Share estimation

Statistics for estimation

Last Updated

13 Nov 2018

Look-up Popularity

Time Traveler for estimation

The first known use of estimation was in the 14th century

See more words from the same century

Keep scrolling for more

More Definitions for estimation



English Language Learners Definition of estimation

: a judgment or opinion about something

: the act of judging the size, amount, cost, etc., of something : the act of estimating something

: a guess about the size, amount, cost, etc., of something


es·​ti·​ma·​tion | \ˌe-stə-ˈmā-shən \

Kids Definition of estimation

1 : the act of making a judgment especially of value, size, or cost an estimation of expenses

Keep scrolling for more

Comments on estimation

What made you want to look up estimation? Please tell us where you read or heard it (including the quote, if possible).


obstinately defiant of authority

Get Word of the Day daily email!

Test Your Vocabulary

Autumn Words of the Day 2018

  • a-top-down-image-of-road-through-an-autumn-forest
  • Which is a synonym of fugacious?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!