gallein

noun

gal·​lein ˈgal-ē-ən How to pronounce gallein (audio) ˈgal-ˌēn How to pronounce gallein (audio)
: a metallic-green crystalline phthalein dye C20H12O7 used especially in dyeing textiles violet and as an indicator

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Cite this Entry

“Gallein.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/gallein. Accessed 7 May. 2025.

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