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balsam of fir

noun

Canada balsam

noun
1.
a pale yellow or greenish, slightly fluorescent, clear, viscous, bitter-tasting, water-insoluble liquid, having a pleasant, aromatic, pinelike odor, and solidifying on exposure to air: obtained from the balsam fir, Abies balsamea, and used chiefly for mounting objects on microscope slides, in the manufacture of fine lacquers, and as a cement for lenses.
Also called Canada turpentine, balsam of fir.
Origin of Canada balsam
1810-1820
1810-20, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for balsam of fir

Canada balsam

noun
1.
a yellow transparent resin obtained from the balsam fir. Because its refractive index is similar to that of glass, it is used as an adhesive in optical devices and as a mounting medium for microscope specimens
2.
another name for balsam fir
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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Difficulty index for balsam of fir

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Word Value for balsam

10
13
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