What does MD stand for?

What does MD mean?

MD	Maximum Differential Business » Products
MD	Medium to Difficult Community » Educational
MD	Mobile Diagnostics Miscellaneous » Unclassified
MD	Manly Dude Business » Positions
MD	Maybe Democrat Governmental » Politics
MD	Maintenance and Diagnostics Computing » Hardware
MD	Major Deity Community » Religion
MD	Mejeriselskabet Danmark Business » Firms
MD	Medium Date Miscellaneous » Unclassified
MD	Maniacal Dictator Governmental » Military
MD	Merry Devil Miscellaneous » Funnies
MD	Morning Disaster Governmental » Transportation
MD	Marketing Disaster Miscellaneous » Unclassified
MD	Messy Diaper Miscellaneous » Funnies
MD	Mondale and Dukakis Governmental » Politics
MD	Marshalled Deployability Governmental » Military
MD	McCleod's Daughters Community » Media
MD	Mostly Desserts Miscellaneous » Food
MD	Mysterious Dude Internet » Chat
MD	Make Decisons Miscellaneous » Unclassified
MD	Medical Divinity Miscellaneous » Funnies
MD	Mad Drumming Community » Music
MD	Majorly Demented Community » Law
MD	Michael's Dream Miscellaneous » Funnies
MD	Metaphysical Doctor Business » Positions