of or relating to study or professional work undertaken after the receipt of a doctorate: postdoctoral courses.
Origin of postdoctoral
1935–40; post- + doctoral
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
of, relating to, or designating studies, research, or professional work above the level of a doctorate
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