resin

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resin

 [rez´in]
1. a solid or semisolid organic substance exuded by plants or by insects feeding on plants, or produced synthetically; they are insoluble in water but mostly soluble in alcohol or ether. adj., adj res´inous.
2. a compound made by condensation or polymerization of low-molecular-weight organic compounds.
acrylic r's products of the polymerization of acrylic or methacrylic acid or their derivatives, used in fabrication of medical prostheses and dental restorations and appliances.
anion exchange resin see ion-exchange resin.
cation exchange resin see ion-exchange resin.
cholestyramine resin a synthetic, strongly basic anion exchange resin in the chloride form which chelates bile salts in the intestine, thus preventing their reabsorption; used as an adjunctive therapy to diet in management of certain hypercholesterolemias and in the symptomatic relief of pruritus associated with bile stasis.
composite resin a synthetic resin, usually acrylic based, to which a high percentage of ceramic reinforcing filler has been added, such as particles of glass or silica coated with a coupling agent to bind them to the matrix; used chiefly in dental restorations. Called also composite.
epoxy resin a tough, chemically resistant, adhesive, flexible, dimensionally stable resin of epoxy polymers; used as denture base material.
ion exchange resin a high-molecular-weight insoluble polymer of simple organic compounds capable of exchanging its attached ions for other ions in the surrounding medium; classified as (a)cation or anion exchange resins, depending on which ions the resin exchanges; and (b) carboxylic, sulfonic, and so on depending on the nature of the active groups.
podophyllum resin a mixture of resins from podophyllum, used as a topical caustic in treatment of laryngeal papillomas, condylomata acuminata, and other epitheliomas.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

res·in

(rez'in, rŏz'),
1. An amorphous, brittle substance consisting of the hardened secretion of various plants, probably derived from a volatile oil and similar to a stearoptene.
2. Synonym(s): rosin
3. A precipitate formed by the addition of water to certain tinctures.
4. A broad term used to indicate organic substances (often polymeric) insoluble in water; the monomer's subunits are named according to their chemical composition, physical structure, and means of activation or curing, for example, acrylic resin, autopolymer resin.
[L. resina]
Farlex Partner Medical Dictionary © Farlex 2012

res·in

(rez'in)
1. An amorphous brittle substance consisting of the hardened secretion of a number of plants, probably derived from a volatile oil and similar to a stearoptene.
2. Synonym(s): rosin.
3. A precipitate formed by the addition of water to certain tinctures.
4. A broad term used to indicate organic substances insoluble in water.
[L. resina]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

resin

  1. any of a mixed group of compounds, including resin ACIDS, ESTERS and TERPENES that are found notably in plants, particularly trees and shrubs. Resins are often exuded from wounds, following injury or the infection of plants by, for example, FUNGI.
  2. a polymerized support used in, for example, CHROMATOGRAPHY.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

res·in

(rez'in)
1. An amorphous, brittle substance consisting of hardened secretion of various plants, probably derived from a volatile oil and similar to a stearoptene.
2. Broad term for organic substances insoluble in water.
3. A precipitate formed by the addition of water to certain tinctures.
[L. resina]
Medical Dictionary for the Dental Professions © Farlex 2012