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

What Happens to Your Heart in the Cold When you're exposed to the cold, your body naturally tries to preserve its internal temperature, explained James Udelson, MD, interim chief physician executive of the CardioVascular Center and chief of cardiology at Tufts Medical Center. —Jenna Anderson, Health, 23 Feb. 2026

In general, children should always be supervised when using a microwave as temperatures may be hotter than expected with relatively short cook times, stresses Makayla Romboy, MD, pediatric emergency medicine physician at Pediatrix. —Hannah Nwoko, Parents, 23 Feb. 2026

Consistent exercise can help lower your stress levels and improve your sleep too—and those can ultimately lower overall feelings of anxiety, Caitlin Mooney, MD, assistant professor in the department of sports medicine at Vanderbilt University Medical Center, tells SELF. —Korin Miller, SELF, 20 Feb. 2026

The bathroom, featuring Perricone MD toiletries, is just as stylish with bronze taps and brown leather dressing tables. —Ann Lee, TheWeek, 16 Feb. 2026

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