# parameter vs perimeter

> English confusable word pair

## The two words

### parameter
*noun · IPA /pəˈɹæm.ɪ.tə/ · frequency rank #13,580*
A value kept constant during an experiment, equation, calculation, or similar, but varied over other versions of the experiment, equation, calculation, etc.

### perimeter
*noun · IPA /pəˈɹɪm.ɪ.tə(ɹ)/ · frequency rank #11,579*
The sum of the distance of all the lengths of the sides of an object.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/parameter-vs-perimeter