md

(noun) a radioactive transuranic element synthesized by bombarding einsteinium with alpha particles (Md is the current symbol for mendelevium but Mv was formerly the symbol). Synonyms: mendelevium, Md, Mv, atomic number 101.

(noun) a licensed medical practitioner. Synonyms: doctor, doc, physician, MD, Dr., medico. Example: "I felt so bad i went to see my doctor."

(noun) a Mid-Atlantic state; one of the original 13 colonies. Synonyms: Maryland, Old Line State, Free State, MD.

(noun) a doctor's degree in medicine. Synonyms: Doctor of Medicine, MD.