Longman Dictionary of Contemporary English homepage

Date: 1500-1600
Language: Latin
Origin: , past participle of aestimare 'to think important'

estimate

2 verb
     
es‧ti‧mate2 S3 W3 [transitive]
to try to judge the value, size, speed, cost etc of something, without calculating it exactly
be estimated to be/have/cost etc
The tree is estimated to be at least 700 years old.
estimate something at something
Organizers estimated the crowd at 50,000.
estimate that
Scientists estimate that smoking reduces life expectancy by around 12 years on average.
estimate how many/what etc
It is not easy to estimate how many people have the disease.
—estimated adjective:
heroin with an estimated street value of £50,000
—estimator noun [countable]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
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