ˌpīōˈsīənə̇n noun
or pyo·cy·a·nine “, -īəˌnēn
( -s )
Etymology: International Scientific Vocabulary pyocyan- (from New Latin pyocyaneus ) + -in or -ine
: a toxic blue crystalline pigment C 13 H 10 N 2 O found in green pus and formed in the metabolism of a bacterium ( Pseudomonas aeruginosa ) that is a quinone imine related to phenazine and has antibiotic activity especially toward gram-positive bacteria