noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A red colouring matter derived from phenol. Used as an indicator. uncountable

Synonyms

All synonyms

rosolic acidrosolic acidyellow corallinyellow corallin

Etymology

From Latin aurum (“gold”) + -in.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.