pm

UK: 'PM', 'pm': /ˌpiːˈɛm/

Collins Concise English Dictionary © HarperCollins Publishers::

pm abbreviation

1. premium

WordReference Random House Learner's Dictionary of American English © 2025

P.M.,  an abbreviation of:

1. post-mortem.
2. Prime Minister.

p.m. or P.M., an abbreviation of Latin post meridiem:

1. Time after noon (used with hours of a day).
2. Time the period between noon and midnight.

WordReference Random House Unabridged Dictionary of American English © 2025

Pm, [Symbol, Chem.]

1. Chemistry promethium.

pm., 

1. premium.

P.M., 

1. Past Master.
2. Paymaster.
3. Time See p.m. 
4. Police Magistrate.
5. Postmaster.
6. post-mortem.
7. Prime Minister.
8. Provost Marshal.

p.m., 

1. Time after noon.
2. Time the period between noon and midnight.
• Latin post merīdiem
Usage
See a.m. 

Collins Concise English Dictionary © HarperCollins Publishers::

PM abbreviation

1. Past Master (of a fraternity)
2. Paymaster
3. Postmaster
4. Prime Minister
5. private message
6. Provost Marshal

Collins Concise English Dictionary © HarperCollins Publishers::

Pm symbol:chemical

1. promethium

Collins Concise English Dictionary © HarperCollins Publishers::

p.m., P.M., pm, PM abbreviation

1. (indicating the time period from midday to midnight) post meridiem
   See a.m.
2. post-mortem (examination)

Etymology: (sense 1) Latin: after noon