From Longman Dictionary of Contemporary Englishp.m.p.m. (also pm British English) /piː ˈem/ ●●● W2 TMCused after numbers expressing the time, to show that it is between noon and midnight → a.m. The meeting starts at 2.30 pm.PMPM /ˌpiː ˈem/ noun [countable] British English informalPGO the Prime Minister a meeting with the PMOrigin p.m. (1600-1700) Latin post meridiem “after noon”
