experiment
I've bought a different kind of coffee this week as an experiment.
I really wanted to make the film as an experiment.
The special election was held on a Saturday as an experiment to see whether it would increase voter participation.
As an experiment, they put a harmless gas into the river to see how far it would move and how fast it would spread.
The scheme began two years ago as an experiment with a limited number of employees.

SMART Vocabulary: related words and phrases

Testing, checking and experimenting
artefact
assay
background check
blood draw
calibrate
experimental
experimentally
experimentation
experimenter
factorial
inoculate
put someone/something through their/its pacesidiom
put something to the testidiom
recheck
reinspect
reinspection
uncheckable
untestable
untested
welfare check