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

In fact, influenza A H3N2 mutated seven times over the summer, to emerge as a stronger, heartier virus, Thomas Russo, MD, professor and chief of infectious disease at the University at Buffalo in New York, tells SELF. —Korin Miller, SELF, 22 Dec. 2025

The crash resulted in the closing of all four lanes of I-695 prior to exit 30, MD 41 Perring Parkway, for over three hours. —Andrew Adeolu, CBS News, 21 Dec. 2025

Lighthouse parenting was discovered by Ken Ginsburg, MD, MSEd, founding director of CPTC and professor of pediatrics at Children's Hospital of Philadelphia. —Alex Vance, Parents, 21 Dec. 2025

Differences in care could be another factor, says Brian Silver, MD, a neurologist at UMass Memorial Health in Worcester, Massachusetts. —Emily Kay Votruba, EverydayHealth.com, 18 Dec. 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