# microcosmic salt

> English word · Noun

## Definitions
1. A white salt, extracted from urine; once used in the preparation of phosphorus, and used in analytical tests for some metals; ammonium sodium hydrogenphosphate (NH₄)NaHPO₄.

## Etymology
From its alchemical name sal microcosmicum.

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