# exfiltration

> English word · Noun

## Definitions
1. The process of exiting an area (usually behind enemy lines or in enemy territory).
2. A method for managing storm water runoff.
3. A filtering out (usually movement of a substance through a barrier).
4. A gradual movement of a substance to exterior (as through cell membrane to extracellular fluid or medium).
5. The covert extraction of data from a system.

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