DictionaryestimateApproximate calculation or judgment
noun / verb

estimate

ES-tuh-mayt/ˈestɪmeɪt/

A rough calculation or judgment, or the act of making one.

She estimates the watermelon's weight by lifting it.

An older woman roughly judges a large watermelon's weight by hefting it and comparing it with a smaller melon in her other hand, without a scale.
Etymology

The underlying idea is appraising worth. Estimate broadened from judging value to forming an approximate notion, allowing the same act of judgment to concern size or amount as well as worth.

In context

Aced (formerly Exponent)2:49
you might need to estimate the amount of data that you're dealing with so you can do some quick calculations for example you can calculate storage size or bandwidth requirements
How to Answer System Design Interview Questions (Complete Guide)

More examples

  • My first estimate was too low.
  • They estimated the crowd at three hundred people.
  • We need a written estimate before work begins.

Forms

estimate · estimates · estimated · estimating

estimation noun — an approximate calculation or judgment

Similar words

approximation
A value close to the actual one.
assessment
A broader evaluation that need not be numerical.