or PM

nounplural 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 or pmed, pm'ing, or pming.
  1. to send a private message to (another user of such a service).

Origin of pm

First recorded in 2000–05
  • Compare dm.

Other definitions for Pm (2 of 5)


Symbol, Chemistry.
  1. promethium.

Other definitions for pm. (3 of 5)


  1. premium.

Other definitions for p.m. (4 of 5)


  1. after noon.

  2. the period between noon and midnight.

Origin of p.m.

From Latin post merīdiem

usage note For p.m.

See a.m.

Other definitions for P.M. (5 of 5)


abbreviation Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use pm in a sentence

  • No answer had reached Uncle David at three o'clock P.M.; he had despatched his message at nine.

    Checkmate | Joseph Sheridan Le Fanu
  • At about two o'clock P.M. he ordered the boot and saddle to be sounded, and gave the word to start.

    The Border Rifles | Gustave Aimard
  • Mr. Lacy's eyes filled, as he read at the top of the page, "11-1/2 P.M., after a visit from M. L."

    Alone | Marion Harland
  • If both meet together at the same hour, say eleven o'clock, the one will reckon 11 A.M., the other 11 P.M.

  • Then came the great earthquake on December 16th, at about 10 P.M.

British Dictionary definitions for pm (1 of 5)


abbreviation for
  1. premium

British Dictionary definitions for pm (2 of 5)


the internet domain name for
  1. St Pierre and Miquelon

British Dictionary definitions for Pm (3 of 5)


the chemical symbol for
  1. promethium

British Dictionary definitions for PM (4 of 5)


abbreviation for
  1. Prime Minister

  2. Past Master (of a fraternity)

  1. Paymaster

  2. Postmaster

  3. military Provost Marshal

British Dictionary definitions for p.m. (5 of 5)


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

  2. post-mortem (examination)

Origin of p.m.

(sense 1) Latin: after noon

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

Scientific definitions for Pm


The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.