experimental group

noun

1. (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.

Word History and Origins

Origin of experimental group¹

First recorded in 1845–50

Example Sentences

In that study, refugees in an experimental group wrote about meaningful events from their past, while refugees in a control group wrote about ordinary events.

From Science News

Her taste for ingenuity led to invitations to experimental groups such as New York’s Fiasco Theater, which debuted a zesty “Two Gentlemen of Verona” in her space in 2014.

From Washington Post