mersa
n.— «Its full name is Methicillin Resistant Staphylococcus Aureus. Commonly called “mersa,” the infection can spread through person to person contact or even though an object an infected person has touched, and it usually invades an open cut, scrape or even bug bite.» —“Deadly staph infection on the rise in Roanoke” WDBJ-TV (Roanoke, Virginia) Aug. 28, 2006. (source: Double-Tongued Dictionary)