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rosin

[roz-in] /ˈrɒz ɪn/
noun, Also called colophony
1.
Chemistry. the yellowish to amber, translucent, hard, brittle, fragmented resin left after distilling the oil of turpentine from the crude oleoresin of the pine: used chiefly in making varnishes, varnish and paint driers, printing inks, and for rubbing on the bows of such string instruments as the violin.
2.
verb (used with object)
3.
to cover or rub with rosin.
Origin
1300-1350
1300-50; Middle English < Old French, variant of resine resin
Related forms
rosiny, adjective
Can be confused
resin, rosin.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for rosin
  • We rubbed rosin over the hair first to help get a better grip.
  • Resin coatings were made from aqueous ammonia solutions of shellac and wood rosin.
  • The crude tall oil, fatty acid, and rosin acid products were mixtures of multiple peaks.
British Dictionary definitions for rosin

rosin

/ˈrɒzɪn/
noun
1.
Also called colophony. a translucent brittle amber substance produced in the distillation of crude turpentine oleoresin and used esp in making varnishes, printing inks, and sealing waxes and for treating the bows of stringed instruments
2.
(not in technical usage) another name for resin (sense 1)
verb
3.
(transitive) to treat or coat with rosin
Derived Forms
rosiny, adjective
Word Origin
C14: variant of resin
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 rosin
rosin
c.1350, from O.Fr. raisine, variant of résine (see resin). The verb is from 1497.
Online Etymology Dictionary, © 2010 Douglas Harper
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rosin in Medicine

rosin ros·in (rŏz'ĭn)
n.
A translucent yellowish to dark brown resin derived from the stumps or sap of various pine trees and used as an adhesive in plasters and as a stimulant in ointments.

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

found only in Authorized Version, margin, Ezek. 27:17, Heb. tsori, uniformly rendered elsewhere "balm" (q.v.), as here in the text. The Vulgate has resinam, rendered "rosin" in the Douay Version. As used, however, by Jerome, the Lat. resina denotes some odoriferous gum or oil.

Easton's 1897 Bible Dictionary
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Encyclopedia Article for rosin

translucent, brittle, friable resin used for varnish and in manufacturing many products. It becomes sticky when warm and has a faint pinelike odour. Gum rosin consists of the residue obtained upon distillation of the oleoresin (a natural fluid) from pine trees (the volatile component is spirit of turpentine); wood rosin, obtained by solvent extraction of the stumps, is usually of a darker colour

Learn more about rosin with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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