MD

UK: /ˌɛmˈdiː/

WordReference Random House Learner's Dictionary of American English © 2026

MD,  an abbreviation of:

1. Doctor of Medicine.
2. Maryland.

Md.,  an abbreviation of:

1. Place Names Maryland.

WordReference Random House Unabridged Dictionary of American English © 2026

MD, 

1. Maryland (approved esp. for use with zip code).
Doctor of Medicine.
• Neo-Latin Medicīnae Doctor
2. Middle Dutch.
3. months after date.
4. Pathology muscular dystrophy.

Md, [Music.]

1. Music and Dance, Chemistry right hand.

• Italian mano destra or French main droite

Md, [Symbol, Chem.]

1. mendelevium.

Md., 

1. Place Names Maryland.

M/D, 

1. months after date.

Also, m/d 
M.D., 

Doctor of Medicine.
• Neo-Latin Medicīnae Doctor
1. Middle Dutch.

Collins Concise English Dictionary © HarperCollins Publishers::

MD abbreviation

1. Doctor of Medicine
2. Managing Director
3. mentally deficient
4. (in Canada) municipal district

Etymology: (sense 1) from Latin Medicinae Doctor

Collins Concise English Dictionary © HarperCollins Publishers::

Md symbol:chemical

1. mendelevium

Collins Concise English Dictionary © HarperCollins Publishers::

Md. abbreviation

1. Maryland