Md

1 of 4

abbreviation (1)

Maryland

Md

2 of 4

symbol

mendelevium

MD

3 of 4

abbreviation or noun

ˌem-ˈdē 

variants or M.D.

plural MDs or M.D.s

: doctor of medicine

John Smith, MD

She earned an M.D. from Harvard Medical School.

Members pay what they would for a standard, managed-care plan, and they get the same access to MDs and hospitals.

—Geoffrey Cowley et al.

MD

4 of 4

abbreviation (2)

1

[Italian mano destra] right hand

2

Maryland

3

medical department

4

minidisc

5

months after date

6

muscular dystrophy

Examples of Md in a Sentence

Recent Examples on the Web

Abbreviation or noun

Radiation Works on Knee Pain a Few Ways Low-dose radiation therapy is thought to ease knee pain by combating inflammation, says Austin Kirschner, MD, PhD, an associate professor of radiation oncology at Vanderbilt University Medical Center in Nashville, Tennessee. —Tom Gavin, EverydayHealth.com, 3 Oct. 2025

That is, people who have spent a substantial amount of time studying it, publishing research on it, teaching on it, or all of the above—for instance, pediatrician Peter Hotez, MD, PhD, on vaccines and nutrition scientist. —Erica Sloan, SELF, 2 Oct. 2025

Not Washing Your Hands One major oversight is not washing your hands properly—or at all—before and after meal prep, especially when handling raw meat or seafood, said Michael Levine, MD, associate professor of emergency medicine at UCLA Health. —Brian Mastroianni, Health, 2 Oct. 2025

Levels of the reproductive hormone progesterone also drop during this time, says Hope Mitchell, MD, a dermatologist and founder of Mitchell Dermatology in Ohio. —Korin Miller, Flow Space, 1 Oct. 2025

Word History

Etymology

Abbreviation or noun

borrowed from Medieval Latin, abbreviation of medicīnae doctor

First Known Use

Abbreviation Or Noun

15th century, in the meaning defined above

Medical Definition

Md

1 of 3 symbol

mendelevium

MD

2 of 3 abbreviation or noun

variants or M.D.

ˌem-ˈdē 

: doctor of medicine

MD

3 of 3 abbreviation

1

medical department

2

muscular dystrophy

Etymology

Abbreviation or noun

Latin medicinae doctor