- 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?
- to send a private message to (another user of such a service).
- after noon.
- the period between noon and midnight.
Origin of p.m.
From the Latin word post merīdiem
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pm
Indiana Jones movie marathon—12:30 pm, SpikeAn Indiana Jones movie marathon is never not a good idea.
Portlandia marathon—9 am-2:30 pm, IFCBecause what better time than Turkey Day to put on a bird on it?
The highly anticipated sixth season of the hilarious spy-spoof will premiere on FX at 10 pm EST on January 8, 2015.‘Archer’ Season 6 Exclusive: Watch Six ‘Certified’ Videos and See the FX Series’ New Key Art
November 24, 2014
The band will be taking your questions in the module below from 4-5 PM EST today.Live Q&A: Pomplamoose
The Daily Beast
November 10, 2014
The image was taken on October 12 at 6:58 PM Central Time in Little Rock.A Tom Cotton Ad on Grindr?
October 29, 2014
I urged the PM to be cautious about overoptimism in giving out the news.
PM urges me not to leave England as it might shake confidence.
When pm is less than pa the whole of 655 the ellipse is to be drawn.
The soles of the feet are naked, and the molar formula is Pm 3/3 M 1/2.The Cambridge Natural History, Vol X., Mammalia
Frank Evers Beddard
A letter without any name signed to it but 'A Friend' or 'Taxpayer' or some'pm like that.Sube Cane
Edward Bellamy Partridge
- St Pierre and Miquelon
- Prime Minister
- Past Master (of a fraternity)
- military Provost Marshal
P.M., pm or PM
- (indicating the time period from midday to midnight) post meridiemSee a.m.
- post-mortem (examination)
(sense 1) Latin: after noon
Word Origin and History for pm
abbreviation of Latin post meridiem "after noon."
Online Etymology Dictionary, © 2010 Douglas Harper
- The symbol for the elementpromethium
- The symbol for promethium.
- A radioactive metallic element of the lanthanide series. Promethium does not occur in nature but is prepared through the fission of uranium. It has 17 isotopes, one of which is used to make long-lived miniature batteries that work at extreme temperatures for up to five years. The longest-lived isotope, Pm 147, has a half-life of 2.5 years and is used as a source of beta rays. Atomic number 61; melting point 1,168°C; boiling point 2,460°C; valence 3. See Periodic Table.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.