preexperiment adjective 1noun 1forms 1 adjective1 •Before an experiment takes place. noun1 •A simple form of research that examines a group or groups before and after an event, to see whether there is change, but does not employ a control group.A study that uses only a manipulation is considered a pre-experiment. As the name implies, a pre-experiment has not quite achieved the level of control necessary to be termed an experiment at all. — 2016 formspreexperiments
