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gallein

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gal·lein   (gāl'ē-ĭn, gāl'ēn')   
n.  A brown or metallic green dye, C20H12O7, used as a pH indicator and in dyeing textiles.

[gall(ic acid) + (phthal)ein.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: gal·lein
Pronunciation: 'gal-E-&n, 'gal-"En
Function: noun
: a metallic-green crystalline phthalein dyeC20H12O7 used especially in dyeing textiles violet and as an indicator
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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