Definition from Wiktionary, the free dictionary
From Latin sal ammoniacus (“salt of Amun, ammonium chloride”), named so because it was found near the temple of (Jupiter) Ammon in Egypt. Ammon derives from Ancient Greek Ἄμμων (Ámmōn), from Egyptian jmn.
- (mineralogy) a rare mineral composed of ammonium chloride found around volcanic fumaroles and guano deposits.
- (chemistry, archaic) ammonium chloride.