Origin of disciplinary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
of, promoting, or used for discipline; corrective
relating to a branch of learningcriticism that crosses disciplinary boundaries
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
1590s, from Medieval Latin disciplinarius, from Latin disciplina (see discipline (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper