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

The antibodies are enough to reduce the risk of severe disease for a baby’s first RSV season, when their airways are still developing and most susceptible to infection, explained Cody Meissner, MD, a panelist and professor of pediatrics at the Dartmouth Geisel School of Medicine. —Staff Author, Verywell Health, 27 June 2025

Touting speedier delivery to customers in North Padre Island, TX, Asbury, IA, Lewes, DE, Sharpton, MD, Fort Seneca, OH and other locations further afield, Amazon will invest over $4 billion to triple the size of its delivery network by the end of next year. —Pamela N. Danziger, Forbes.com, 27 June 2025

While data suggests that living along the coast equates to higher marine microplastic exposure, Philip Kuriakose, MD, a hematologist who has studied microplastics in human blood, notes that the potential risks aren’t limited to specific geographic areas. —Emily Kay Votruba, EverydayHealth.com, 25 June 2025

The authors also don’t provide a comprehensive definition for screen time addiction—something that’s still being debated, shares James Sherer, MD, the deputy chief medical officer and addiction medicine director at Carrier Clinic in New Jersey. —Beth Ann Mayer, Parents, 25 June 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