# ausonium

> English word · Noun

## Definitions
1. A rejected name for neptunium. (Ausonium chemical symbol: Ao)

## Etymology
From Ancient Greek Αὐσονία (Ausonía, “Italy”) + -ium.

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