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[myoo-suh-lij] /ˈmyu sə lɪdʒ/
any of various, usually liquid, preparations of gum, glue, or the like, used as an adhesive.
any of various gummy secretions or gelatinous substances present in plants.
Origin of mucilage
1350-1400; Middle English muscilage < Middle French musillage < Late Latin mūcilāgō a musty juice, akin to mūcēre to be musty. See mucor Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for mucilage


a sticky preparation, such as gum or glue, used as an adhesive
a complex glutinous carbohydrate secreted by certain plants
Derived Forms
mucilaginous (ˌmjuːsɪˈlædʒɪnəs) adjective
mucilaginously, adverb
mucilaginousness, noun
Word Origin
C14: via Old French from Late Latin mūcilāgo mouldy juice; see mucid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for mucilage

late 14c., mussillage, "viscous substance found in vegetable material," from Old French mucilage (14c.), from Late Latin mucilago "musty or moldy juice" (4c.), from Latin mucere "be musty or moldy," from mucus "mucus" (see mucus). Meaning "adhesive" is first attested 1859.

Online Etymology Dictionary, © 2010 Douglas Harper
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mucilage in Medicine

mucilage mu·ci·lage (myōō'sə-lĭj)
A viscid preparation consisting of a solution of a plant-based gum in water and used in pharmacy as an excipient.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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