# pleonaste

> English word · Noun

## Definitions
1. A black variety of spinel.

## Etymology
Ancient Greek [Term?] abundant, rich; compare French pléonaste.

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