pm

or PM

Digital Technology.

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).

Pm

Symbol, Chemistry.

promethium.

pm.

premium.

p.m.

after noon.

the period between noon and midnight.

Origin of p.m.

From the Latin word post merīdiem

Usage note

See a.m.

P.M.

or PM

Police Magistrate.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for pm

siesta, teatime, autopsy, critique, review, P.M.

Examples from the Web for pm

Contemporary Examples of pm

Indiana Jones movie marathon—12:30 pm, SpikeAn Indiana Jones movie marathon is never not a good idea.
The Ultimate Thanksgiving Weekend TV Guide: Must-See Marathons, Specials, and Parades
Kevin Fallon
November 26, 2014
Portlandia marathon—9 am-2:30 pm, IFCBecause what better time than Turkey Day to put on a bird on it?
The Ultimate Thanksgiving Weekend TV Guide: Must-See Marathons, Specials, and Parades
Kevin Fallon
November 26, 2014
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
Marlow Stern
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?
Ben Jacobs
October 29, 2014

Historical Examples of pm

PM urges me not to leave England as it might shake confidence.
Greener Than You Think
Ward Moore
I urged the PM to be cautious about overoptimism in giving out the news.
Greener Than You Think
Ward Moore
When pm is less than pa the whole of 655 the ellipse is to be drawn.
Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 6
Various
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

British Dictionary definitions for pm

pm

abbreviation for

premium

pm

the internet domain name for

St Pierre and Miquelon

Pm

the chemical symbol for

promethium

PM

abbreviation for

Prime Minister

Past Master (of a fraternity)

Paymaster

Postmaster

military Provost Marshal

p.m.

P.M., pm or PM

abbreviation for

(indicating the time period from midday to midnight) post meridiemSee a.m.

post-mortem (examination)

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

Word Origin and History for pm

p.m.

abbreviation of Latin post meridiem "after noon."

pm in Medicine

pm

abbr.

picometer

Pm

The symbol for the elementpromethium

pm in Science

Pm

The symbol for promethium.

promethium

[prə-mē′thē-əm]

Pm

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.