part-time (pärt?t?m?)adj. For or during less than the customary or standard time: a part-time job.part?-time? adv.part?-tim?er n.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.part-time adj (Industrial Relations & HR Terms) for less than the entire time appropriate to an activity: a part-time job; a part-time waitress. adv (Industrial Relations & HR Terms) on a part-time basis: he works part time. ?part-?timer nCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014part-time (adj. ?p?rt?ta?m; adv. ?p?rt?ta?m) adj. 1. working or attending school less than the usual or full time. 2. pertaining to or noting such work or study: part-time employment. adv. 3. on a part-time basis: to work part-time. [1890?95] part?-tim?er, n. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.