noun plural pms, pm's.
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.
to send a private message to (another user of such a service).
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Question 1 of 7
What does “vacillate” mean?
Definition for pm (2 of 5)
Definition for pm (3 of 5)
Definition for pm (4 of 5)
the period between noon and midnight.
Origin of p.m.
From Latin post merīdiem
usage note for p.m.
Definition for pm (5 of 5)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for pm (1 of 5)
British Dictionary definitions for pm (2 of 5)
the internet domain name for
St Pierre and Miquelon
British Dictionary definitions for pm (3 of 5)
the chemical symbol for
British Dictionary definitions for pm (4 of 5)
Past Master (of a fraternity)
military Provost Marshal
British Dictionary definitions for pm (5 of 5)
P.M., pm or PM
(indicating the time period from midday to midnight) post meridiemSee a.m.
Word Origin for 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
Medical definitions for pm (1 of 3)
Medical definitions for pm (2 of 3)
The symbol for the elementpromethium
Medical definitions for pm (3 of 3)
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for pm
The symbol for promethium.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.