# septon

> English word · Noun

## Definitions
1. nitrogen

## Etymology
Back formation from septic acid (nitric acid), so named because nitrogen appeared to be the cause of putrefaction.

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