# unionid

> English word · Noun

## Definitions
1. Any member of the family Unionidae of bivalves.

## Etymology
From taxonomic name Unionidae. Compare unionoid.

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