Dictionary.com
Thesaurus.com
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.

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

From Los Angeles Times • Mar. 22, 2026

"I was called around 10:30 pm and told that he was wounded and in the hospital," his wife, Jeanne d'Arc Boutros, told AFP from northern Lebanon, where she had fled to a relative's home.

From Barron's • Mar. 17, 2026

Around the same period men banged on the door of the home at 10:30 pm.

From Barron's • Mar. 17, 2026

Amsterdam-based nonprofit Radio Zamaneh began shortwave broadcasts during the January protests, sending a nightly Farsi news programme from 11:00 pm Tehran time.

From Barron's • Mar. 13, 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.