from the GNU version of the Collaborative International Dictionary of English

  • adj. Pertaining to, or designating, an organic acid which is obtained from several varieties of lichen (Lecanora, Roccella, etc.), as a white, crystalline substance, and is called also orsellic acid, diorsellinic acid, lecanorin, etc.

from The Century Dictionary and Cyclopedia

  • Related to or derived from plants of the genus Lecanora.


Sorry, no etymologies found.


  • On the other hand, the constitution of the simpler natural tannoids is known to a greater or less extent; of these, lecanoric acid (Lecanors√§ure) is the best known, being an ester anhydride of orsellic acid (a dihydroxytoluylic acid).

    Synthetic Tannins


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