# lavoisium

> English word · Noun

## Definitions
1. (obsolete) A supposed silvery-white, malleable, metallic chemical element, said to have been discovered in pyrites and some other minerals.

## Etymology
From Lavoisier + -ium, named after the French chemist Antoine Lavoisier.

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