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post meridiem

[pohst muh-rid-ee-uh m, -em]
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adjective
  1. p.m.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for post meridiem

post meridiem

  1. the full form of p.m.

Word Origin

C17: 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 post meridiem

"after noon," 1640s, Latin, from post "after" (see post-) + accusative of meridies (see meridian).

Online Etymology Dictionary, © 2010 Douglas Harper