abbreviation
You use p.m. after a time to show that it is between midday and midnight: The plane leaves at 3?p.m.
We use a.m. for times between midnight and midday.
p.m. BrE AmE (also pm British English) /piː ˈem/
[Date: 1600-1700; Language: Latin; Origin: post meridiem 'after noon']
used after numbers expressing the time, to show that it is between ↑noon and ↑midnight ⇨ a.m.:
The meeting starts at 2.30 pm.
p.m.(NAmE alsoP.M.)[ˌpiː ˈem][ˌpiː ˈem]abbreviation
after 12 o'clock noon (from Latin ‘post meridiem ’) • The appointment is at 3 p.m. compare a.m. Word Origin:
p.m. (TIME), pm /ˌpiːˈem/
ABBREVIATION
used when referring to a time in the afternoon or evening or at night:
We'll be arriving at about 4.30 p.m.
The 6pm train is usually very crowded.
p.m. is used after a number to show that you are referring to a particular time between 12 noon and 12 midnight. Compare a.m.
The spa closes at 9:00 pm.