- taking place while one is employed: an in-service training program.
Origin of in-service
First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- denoting training that is given to employees during the course of employmentan in-service course
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 inservice
Online Etymology Dictionary, © 2010 Douglas Harper