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  • synonyms

pm

or PM

Digital Technology.
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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?
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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).
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Pm

Symbol, Chemistry.
  1. promethium.
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pm.

  1. premium.
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p.m.

  1. after noon.
  2. the period between noon and midnight.
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Origin of p.m.

From the Latin word post merīdiem

Usage note

See a.m.

P.M.

or PM

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for pm

pm1

abbreviation for
  1. premium
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pm2

the internet domain name for
  1. St Pierre and Miquelon
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Pm

the chemical symbol for
  1. promethium
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PM

abbreviation for
  1. Prime Minister
  2. Past Master (of a fraternity)
  3. Paymaster
  4. Postmaster
  5. military Provost Marshal
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p.m.

P.M., pm or PM

abbreviation for
  1. (indicating the time period from midday to midnight) post meridiemSee a.m.
  2. post-mortem (examination)
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Word Origin

(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

Word Origin and History for pm

p.m.

abbreviation of Latin post meridiem "after noon."

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Online Etymology Dictionary, © 2010 Douglas Harper

pm in Medicine

pm

abbr.
  1. picometer
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Pm

  1. The symbol for the elementpromethium

pm in Science

Pm

promethium

[prə-mēthē-əm]
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.