(in an experiment or clinical trial) a group of subjects who are exposed to the variable under study: a lower infection rate in the experimental group that received the vaccine.
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Medicine definitions for experimental group
[ ĭk-spĕr′ə-mĕn′tl ]
A group of subjects that are exposed to the variable of a control experiment.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.