# substitution

> English word · Noun · IPA /ˌsʌb.stɪˈtjuː.ʃən/ · frequency rank #17,040

## Definitions
1. The act of substituting or the state of being substituted.
2. A substitute or replacement.
3. The replacement of an atom, or group of atoms, in a compound, with another.
4. The expansion of the lexicon of a language by native means in correspondence to a foreign term.

## Etymology
From Middle French substitution, from Late Latin substitutio.

## Common misspellings (19)
`sbustitution`, `ssubstitution`, `subbstitution`, `subsittution`, `subsstitution`, `substittuion`, `substittution`, `substituiton`, `substitusion`, `substitutino`, `substitutionn`, `substitutoin`, `substituttion`, `substiuttion`, `substtitution`, `substtiution`, `subtsitution`, `susbtitution`, `usbstitution`

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