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Use of or reliance on volunteers, especially to perform social or educational work in communities.
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.
(Sociology) the principle of donating time and energy for the benefit of other people in the community as a social responsibility rather than for any financial reward
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
vol•un•teer•ism(ˌvɒl ənˈtɪər ɪz əm)
2. the policy or practice of volunteering one's time or services, as for charitable or community work.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
the practice or advocacy of working as a volunteer, often with the hope of thereby gaining paid employment in the same field.See also: Work
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.