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Related to control group: independent variable
(Medicine) any group used as a control in a statistical experiment, esp a group of patients who receive either a placebo or a standard drug during an investigation of the effects of another drug on other patients
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Personnel, ships, and craft designated to control the waterborne ship-to-shore movement.
Dictionary of Military and Associated Terms. US Department of Defense 2005.