# Nordhausen acid

> English word · Noun

## Definitions
1. Synonym of oleum (“solution of sulfur trioxide in sulfuric acid”).

## Etymology
From Nordhausen in Germany, once the place of its manufacture.

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