Canada balsam

Canada balsam

noun
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:
1810–20, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Canada balsam is always a great word to know.
So is ninnyhammer. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a fool or simpleton; ninny.
Collins
World English Dictionary
Canada balsam
 
n
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 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Britannica
Encyclopedia

Canada balsam

oleoresin consisting of a viscous yellowish to greenish liquid exuded by the balsam fir of North America, Abies balsamea. It is actually a turpentine, belonging to the class of oleoresins (natural products consisting of a resin dissolved in an essential oil), and not a balsam.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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