<chemistry> 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.

Origin: Gr, pitch + beautiful: cf. F. Pittacale.

(01 Mar 1998)

Pitres, Jean, Pitres' sign, Pitressin, pitta < Prev | Next > pitted, pitted keratolysis, pitter

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