# infiltration

> English word · Noun · IPA /ɪnfɪlˈtɹeɪʃən/ · frequency rank #21,245

## Definitions
1. The act or process of infiltrating, as of water into a porous substance, or of a fluid into the cells of an organ or part of the body.
2. The act or process of infiltrating, as of water into a porous substance, or of a fluid into the cells of an organ or part of the body.
3. The substance which has entered the pores or cavities of a body.
4. The act of secretly entering a physical location and/or organization.

## Etymology
From Middle English infiltracioun, from Medieval Latin infiltrātiōnem, infiltrātiō. By surface analysis, infiltrat(e) + -ion.

## Common misspellings (19)
`ifniltration`, `inffiltration`, `infilltration`, `infilrtation`, `infiltartion`, `infiltraiton`, `infiltrasion`, `infiltratino`, `infiltrationn`, `infiltratoin`, `infiltrattion`, `infiltrration`, `infiltrtaion`, `infilttration`, `infitlration`, `inflitration`, `inifltration`, `innfiltration`, `nifiltration`

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