• (n.) A yellow, crystalline substance, resembling aurin, and obtained by the oxidation of pittacal; -- called also eupittonic acid.
Eu·pit'tone noun [ Prefix eu- + pitt acal + -one .] (Chemistry) A yellow, crystalline substance, resembling aurin, and obtained by the oxidation of pittacal; -- called also eupittonic acid . [ Written also eupitton .]