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 average pet dog lives 10 to 13 years, according to Pet MD. — Hanna Wickes, Fort Worth Star-Telegram, 16 Oct. 2026

The average dog lives 10 to 13 years, according to Pet MD, but the spread around that number is wide. — Hanna Wickes, Kansas City Star, 16 Oct. 2026

The average dog lives 10 to 13 years, according to Pet MD, though size, breed and genetics shift that number dramatically. — Hanna Wickes, Miami Herald, 16 Oct. 2026

Leading dermatologist and hair-loss specialist Sharon Belmo, MD, notes that this is largely due to the regulatory context governing these products. — Ata-Owaji Victor, Vogue, 13 Oct. 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