purpurin

[ pur-pyoo-rin ]

noun

, Chemistry.

1. a reddish, crystalline, anthraquinone dye, C 1 4 H 5 O 2 (OH) 3 , isomeric with flavopurpurin.

purpurin

/ ˈpɜːpjʊrɪn /

noun

1. a red crystalline compound used as a stain for biological specimens; 1,2,4-trihydroxyanthraquinone. Formula: C 14 H 5 O 2 (OH) 3

Word History and Origins

Origin of purpurin¹

1830–40; < Latin purpur ( a ) purple + -in ²

Word History and Origins

Origin of purpurin¹

C19: from Latin purpura purple + -in

Example Sentences

The presence of the same red pigment Bacterio-purpurin seemed justly to indicate the existence of common chemical processes.

From Project Gutenberg

These are cochineal, mixed with certain chemicals, hot purpurin sulphuric acid, and the red dye of the banana-eater.

From Project Gutenberg

The same operations have also another end--to transform the purpurin into its hydrate, which is brighter and more solid.

From Project Gutenberg

The Purpurin, like some of the murices, when mutilated, exude a reddish-purple fluid.

From Project Gutenberg

Madder contains two closely allied colouring matters, namely, alizarin and purpurin.

From Project Gutenberg