# roccellic acid

> English word · Noun

## Definitions
1. A dibasic acid, C₁₇H₃₂O₄, of the oxalic series, found in archil (Roccella tinctoria, etc.), and other lichens.

## Etymology
From French roccellique, from roccelle (“archil”), from Italian roccella, from rocca (“a rock”), because archil grows on rock.

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