Bible Dictionaries
Pyocyanin

Webster's Dictionary

(n.) 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).

Bibliography Information
Webster, Noah. Entry for 'Pyocyanin'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​p/pyocyanin.html. 1828.