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Synonyms

pm

1 American  
Or PM

noun

plural

pms, pm's

  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?

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.

pm. 3 American  

abbreviation

  1. premium.

p.m. 4 American  

abbreviation

  1. after noon.

  2. the period between noon and midnight.

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.

PM 1 British  

abbreviation

  1. Prime Minister

  2. Past Master (of a fraternity)

  3. Paymaster

  4. Postmaster

  5. military Provost Marshal

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
p.m. 2 British  

abbreviation

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

  2. post-mortem (examination)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Pm 3 British  

symbol

  1. promethium

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
pm 4 British  

abbreviation

  1. premium

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
pm 5 British  

abbreviation

  1. St Pierre and Miquelon

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

See a.m.

Etymology

Origin of pm1

First recorded in 2000–05

Origin of p.m.4

From Latin post merīdiem

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Egypt has ordered shops, restaurants and shopping malls to close from 9:00 pm on weekdays, hoping to curb energy bills that have more than doubled because of the war.

From Barron's • Apr. 3, 2026

The plane, operated by Jazz Aviation, a regional partner of Air Canada, struck the firetruck on Runway 4 at around 11:40 pm as the truck drove to a separate incident.

From Barron's • Mar. 23, 2026

Ventura County Fire Department received a call reporting the incident around 7:30 pm.

From Los Angeles Times • Mar. 22, 2026

It’s 8 pm on a Thursday and my stomach is growling for food.

From Salon • Mar. 3, 2026

He is deter- pm honoringPresident mined to find evidence that will link the Abraham Lincoln. man to the two strangers.

From "Lincoln's Last Days: The Shocking Assassination that Changed America Forever" by Bill O'Reilly

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.