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Approximation
(noun)

- A value or a number that is close to, but not exactly equal to, a specific value or number.
- An estimation or a calculation that is not exact or precise.

### Origin:

From the latin word approximatio meaning "a drawing near" or "a coming close".

### Examples:

- The approximation of pi is 3.14.
- The word "approximation" comes from the Latin word approximatio meaning "a drawing near" or "a coming close".
- He made an approximation of the cost of the project.
- The approximation of the distance was off by a few miles.
- The approximation of the time was not accurate.