noun. An acute, very contagious form of conjunctivitis, caused by the hemophilic bacterium Hemophilus aegyptius and marked by thick secretions.

noun. a highly contagious form of conjunctivitis

noun. inflammation of the conjunctiva of the eye

"The visible mucous membranes (as the conjunctiva), from which it received the name pinkeye, and the mouth, and the natural openings become of a deep saffron, ocher, or violet-red color."

inflammation  redness  rubor  

ophthalmia  ophthalmitis