[ rez-in ]
/ ˈrɛz ɪn /
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any of a class of nonvolatile, solid or semisolid organic substances, as copal or mastic, that consist of amorphous mixtures of carboxylic acids and are obtained directly from certain plants as exudations or prepared by polymerization of simple molecules: used in medicine and in the making of varnishes and plastics.
Also rosin . a substance of this type obtained from certain pines.

verb (used with object)

to treat or rub with resin.



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The rainy weather could not ________ my elated spirits on my graduation day.

Origin of resin

First recorded in 1350–1400; Middle English, from Old French resine, from Latin rēsīna, probably from a non-Indo-European language; compare Greek rhētī́nē “pine resin,” from a related source
res·in·like, adjective
resin , rosin

Definition for resin (2 of 2)

[ rez-in ]
/ ˈrɛz ɪn /


a male given name.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for resin

/ (ˈrɛzɪn) /


any of a group of solid or semisolid amorphous compounds that are obtained directly from certain plants as exudations. They are used in medicine and in varnishes
any of a large number of synthetic, usually organic, materials that have a polymeric structure, esp such a substance in a raw state before it is moulded or treated with plasticizer, stabilizer, filler, etcCompare plastic (def. 1)


(tr) to treat or coat with resin
resinous, adjectiveresinously, adverbresinousness, noun
C14: from Old French resine, from Latin rēsīna, from Greek rhētinē resin from a pine
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

Medical definitions for resin

[ rĕzĭn ]


Any of numerous clear to translucent yellow or brown, solid or semisolid, viscous substances of plant origin, such as copal, rosin, and amber.
Any of numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials and thermosetting materials.
A precipitate formed by the addition of water to certain tinctures.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for resin

[ rĕzĭn ]

Any of numerous clear or translucent, yellowish or brownish substances that ooze from certain trees and plants. Resins are used in products such as varnishes, lacquers, adhesives, plastics, and drugs. Balsam is a resin.
Any of various artificial substances, such as polyurethane, that have similar properties to natural resins and are used to make plastics.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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