The story
From Swedish mjölk-socker-syra (milk-sugar-acid).
Etymology from Wiktionary, CC BY-SA 4.0.
mucic acid
Today it means: A dicarboxylic acid, HOOC-(CHOH)₄-COOH, produced by the oxidation of the milk sugar galactose, used as a test for the presence of galactose or lactose. Full definition →