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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

Noun Inflected Forms

• 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

Where regional authorities have banned harvesting between 2:00 pm and 7:00 pm, some silos are now opening overnight.

From Barron's • Jun. 23, 2026

On Monday, hypermarket operator Carrefour had sold 30,000 units by 6:30 pm – "a thousand times more than on a normal day", CEO Alexandre Bompard said.

From Barron's • Jun. 23, 2026

Birmingham on Saturday at 1 pm at Dodger Stadium.

From Los Angeles Times • May 21, 2026

Raman and Bass will square off again Wednesday, during a televised debate from the Skirball Cultural Center hosted by NBC4 and Telemundo 52 starting at 5 pm.

From Los Angeles Times • May 6, 2026

A Mass for the dead would be held daily at 6:00 pm until further notice.

From "The Dead and the Gone" by Susan Beth Pfeffer