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• pm
  pm

  noun

  a private message sent to another user of a social media service or private messaging service.
• Pm
  Pm

  promethium.
• pm.
  pm.

  abbreviation

  premium.
• p.m.
  p.m.

  abbreviation

  after noon.
• P.M.
  P.M.

  abbreviation

  past master.
• PM
  PM

  abbreviation

  Prime Minister

pm

¹ American  

Or PM

noun

pms, plural pm's plural

1. a private message sent to another user of a social media service or private messaging service.

   How do I send a pm to the moderator of the message board?

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verb (used with object)

pm'd, pmed, pm'ing, pming

1. to send a private message to (another user of such a service).

Pm ² American  

Symbol, Chemistry.

1. promethium.

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pm. ³ American  

abbreviation

1. premium.

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p.m. ⁴ American  

abbreviation

1. after noon.

2. the period between noon and midnight.

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P.M. ⁵ American  

Or PM

abbreviation

1. past master.

2. paymaster.

3. p.m.

4. Police Magistrate.

5. postmaster.

6. postmortem.

7. prime minister.

8. provost marshal.

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PM ¹ British  

abbreviation

1. Prime Minister

2. Past Master (of a fraternity)

3. Paymaster

4. Postmaster

5. military Provost Marshal

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p.m. ² British  

abbreviation

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

2. post-mortem (examination)

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Pm ³ British  

symbol

1. promethium

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pm ⁴ British  

abbreviation

1. premium

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pm ⁵ British  

abbreviation

1. St Pierre and Miquelon

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Usage

See a.m.

Other Word Forms

Inflected Forms

noun

• pm's
  plural
• pms
  plural

Etymology

Origin of pm¹

First recorded in 2000–05

Origin of p.m.⁴

From Latin post merīdiem

Example Sentences

My day began in the fitness center on Deck 16 at 7 a.m. and ended with a 7 p.m.

From The Wall Street Journal • Jun. 3, 2026

Note: Finals in all divisions Saturday, June 6 at 4 p.m. at higher seeds.

From Los Angeles Times • Jun. 3, 2026

There was a striking seriousness to the whole performance, which spanned from just past 10 p.m. to 2 a.m.

From Los Angeles Times • Jun. 2, 2026

“Talks are continuing, at a rapid pace, with the Islamic Republic of Iran,” he said in a social media post around 1:43 p.m.

From Barron's • Jun. 1, 2026

In the future, she would say that the reason she had not flown on that 10:00 p.m. flight was “fate,” because it was “not her time to go.”

From "The Woman All Spies Fear" by Amy Butler Greenfield