Picamar is a colorless, hydrocarbon oil extracted from the creosote of beechwood tar with a peculiar odor and bitter taste. It consists of derivatives of pyrogallol. It was discovered by German chemist Karl von Reichenbach in the 1830s. ...
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bitter oily liquid obtained from tar
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• (n.) An oily liquid hydrocarbon extracted from the creosote of beechwood tar. It consists essentially of certain derivatives of pyrogallol.
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http://thinkexist.com/dictionary/meaning/picamar/
Pic'a·mar` noun [ Latin
pix ,
picis , pitch +
amarus bitter.]
(Chemistry) An oily liquid hydrocarbon extracted from the creosote of beechwood tar. It consists essentially of certain derivatives of pyrogallol.
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http://www.encyclo.co.uk/webster/P/83
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