0 abbreviation for Doctor of Medicine: a degree that someone must have to work as a doctor, or a person who has this degree: --
Stephen Day, MD
1 abbreviation for managing director UK : --
2 abbreviation for MiniDisc trademark --
3 written abbreviation for the US state of Maryland: used in addresses --
4 abbreviation for Doctor of Medicine (= an advanced university degree needed to work as a medical doctor): --
Steven Tay, M.D.
5 abbreviation for managing director --