# lacmoid

> English word · Noun

## Definitions
1. A purplish dye made from resorcin, employed as an indicator, being turned blue by alkalis and red by acids.

## Etymology
Originally a trade name.

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