# nipponium

> English word · Noun

## Definitions
1. A chemical element, supposed to be the then-undiscovered technetium, but later identified as rhenium.

## Etymology
From Nippon + -ium. Doublet of nihonium.

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