es·​ti·​ma·​tion | \ ˌe-stə-ˈmā-shən How to pronounce estimation (audio) \

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

Keep scrolling 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 By Gavin Trump's estimation, nearly everyone at his middle school in Chapel Hill comes from a Democratic family. Anchorage Daily News, "Trump’s rhetoric has changed the way kids are bullied in classrooms," 14 Feb. 2020 By some estimations there are over 10,800 saints, of which there are more than 30 Valentines and even a few Valentinas. Simon Maina, National Geographic, "Valentine's Day wasn't always about love," 12 Feb. 2020 All told, a company of about 10,000 employees might devote around $35 million to appraisals yearly, including the cost of performance management software, according to expert estimations. Lila Maclellan, Quartz at Work, "The Performance Review gets its annual performance review," 11 Feb. 2020 In its quarterly report released on Feb. 6, Uber claimed to fulfil over 50% of the rides in the country, citing internal estimations. Ananya Bhattacharya, Quartz India, "Ola hopes to unseat Uber in London with launch offers for drivers and riders," 10 Feb. 2020 With all of that, Eilish made about $8 million by Celebrity Net Worth’s estimation. Sarah Midkiff,, "Billie Eilish Is One Of The Grammys’ Most Nominated Artists — & She’s Worth More Than You Think," 25 Jan. 2020 Asteroid mass estimation remains something of a dark art based on guessing plausible densities and sizes. Charlie Wood, Popular Science, "How astronomers weigh the universe (and everything in it)," 26 Dec. 2019 Wright was correct in his (sky-high) estimation of his ability. New York Times, "Frank Lloyd Wright: Separating the Life From the Work," 20 Dec. 2019 And there was the disgrace of multiple BBC journalists scoffing at Labour’s promise to plant two billion trees by 2040, a number that is by actual expert estimations ambitious but far from impossible—because, Ooh, isn’t two billion loads? Libby Watson, The New Republic, "Britons to Decide Whether to Prolong Tories’ Carnival of Austerity," 12 Dec. 2019

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

Time Traveler for estimation

Time Traveler

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

See more words from the same century

Statistics for estimation

Last Updated

20 Feb 2020

Cite this Entry

“Estimation.” Dictionary, Merriam-Webster, Accessed 26 Feb. 2020.

Keep scrolling for more

More Definitions for estimation


How to pronounce estimation (audio)

English Language Learners Definition of estimation

formal : 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 How to pronounce estimation (audio) \

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).


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

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!