- of or relating to the afternoon.
- occurring after noon: a postmeridian lull.
Origin of postmeridian
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- after noon; in the afternoon or evening
Word Origin for postmeridian
C17: from Latin postmerīdiānus in the afternoon; see post-, meridian
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