- Noun. Native or inhabitant of Ammon.
- Proper noun. Extinct Canaanite language of the Ammonite people who used to live in modern-day northwest Jordan, and after whom its capital Amman is named. Extinct since 5th century BCE.
- Noun. An explosive prepared from ammonium nitrate; amatol.
- Noun. Any of an extinct group of cephalopods of the subfamily ''Ammonoidea''; a fossil shell of such an animal.