1. The supposed base of ammonia.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• amonium,
• aonium,
• ammogium,
• aemobium,
• ammobyum,
• ammobiem,
• ammonia,
• ammoniic,
• zmmonium,
• smmonium,
• wmmonium,
• qmmonium,
• anmonium,
• akmonium,
• ajmonium,
• ammoniun,
• sammonium,
• ammonuim,
• cuminium,
• lymonium

The adjective form of the word "ammonium" is "ammoniacal".

The plural of the "ammonium" can be the "ammoniums".

The singular of the "ammonium" can be the "ammonium".