# metatartaric acid

> English word · Noun

## Definitions
1. a polymeric lactone of variable composition obtained by heating tartaric acid; used to prevent precipitation in wine

## Etymology
From meta- + tartaric acid.

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