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1. Operating to produce effects; effective.
2. Psychology Of, relating to, or being a response that occurs spontaneously and is identified by its reinforcing or inhibiting effects.
1. One that operates.
2. Psychology An element of operant behavior.
[Latin operāns, operant-, present participle of operārī, to work; see operate.]
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.
from an operative or productive point of view
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014