'Pyocyanin' definitions:

Definition of 'pyocyanin'

(from WordNet)
noun
A toxic blue crystalline antibiotic found in green pus

Definition of 'Pyocyanin'

From: GCIDE
  • Pyocyanin \Py`o*cy"a*nin\, n. [Gr. ? pus + ? dark blue.] (Physiol. Chem.) A blue coloring matter found in the pus from old sores, supposed to be formed through the agency of a species of bacterium (Bacillus pyocyaneus). [1913 Webster]