adjective
[ only before noun ] ( of training, courses of study, etc. ) done while sb is working in a job, in order to learn new skills :
in-service training
adjective
[ only before noun ] ( of training, courses of study, etc. ) done while sb is working in a job, in order to learn new skills :
in-service training
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005