Pittacal
Pronunciation : Pit"ta*cal
Part of Speech : n.
Etymology : [Gr. pittacale.] (Chem.)
Definition : Defn: A dark blue substance obtained from wood tar. It consists of hydrocarbons which when oxidized form the orange-yellow eupittonic compounds, the salts of which are dark blue.
Source : Webster's Unabridged Dictionary, 1913