# optimisation

> English word · Noun · frequency rank #40,370

## Definitions
1. Alternative spelling of optimization.

## Etymology
From optimise + -ation.

## Easily confused with
- **optimization** (https://plainspell.com/en/vs/optimisation-vs-optimization)

## Common misspellings (18)
`opitmisation`, `opptimisation`, `optiimsation`, `optimiastion`, `optimisaiton`, `optimisasion`, `optimisatino`, `optimisationn`, `optimisatoin`, `optimisattion`, `optimissation`, `optimistaion`, `optimmisation`, `optimsiation`, `optmiisation`, `opttimisation`, `otpimisation`, `potimisation`

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