A testing period of time
A period of time when a person occupies a position only conditionally and may easily be removed for poor performance
A type of sentence where convicted criminals are allowed to continue living in the community but will automatically be sent to jail if they violate certain conditions
An empirical test of the suitability or effectiveness of a method or thing by running it at least once.
An empirical test of the suitability or capability of a person or actor by letting him perform at least once.