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Latin pix, picis, pitch + amarus bitter.


picamar ‎(uncountable)

  1. (organic chemistry) An oily liquid hydrocarbon extracted from the creosote of beechwood tar, and consisting essentially of certain derivatives of pyrogallol.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.