estimation

noun

es·​ti·​ma·​tion ˌe-stə-ˈmā-shən 

1

: judgment, opinion

a poor choice in my estimation

2

a

: the act of estimating something

b

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

3

: esteem, honor

Synonyms of estimation

• assessment
• appraisal
• estimate
• evaluation
• appraisement

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.

Recent Examples on the Web

The alarming statement followed Gross’s estimation that the risk of a nuclear war was increasing from 1 percent per year to about 2 percent annually. —Manon Bischoff, Scientific American, 19 Apr. 2026

The fraction of systems used for this estimation grows very slowly compared to the total number available, so most of the systems remain intact. —Rupendra Brahambhatt, Interesting Engineering, 19 Apr. 2026

In 2013, Bilmes revised her estimations—and concluded the cost was actually closer to $4 trillion to $6 trillion. —Sasha Rogelberg, Fortune, 17 Apr. 2026

As part of the agreement, Roblox will implement facial age estimation technology to limit younger users’ chats to only those in similar age groups. —Jessica Hill, Chicago Tribune, 15 Apr. 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing estimation

• point estimation
• re-estimation
• rise in someone's estimation

Rhymes for estimation

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation

Kids Definition

estimation

noun

es·​ti·​ma·​tion ˌes-tə-ˈmā-shən 

1

: judgment sense 3, opinion

2

: estimate entry 2 sense 3

3

: esteem entry 1