pyocyanin Meaning, Definition & Usage

  1. noun a toxic blue crystalline antibiotic found in green pus

WordNet

Py`o*cy"a*nin noun
Etymology
Gr. pus + dark blue.
Definitions
  1. (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). now, Pseudomonas aeruginosa C13H10N2O

Webster 1913