one-off test
nounUK /ˌwʌn ˈɒf test/
US /ˌwʌn ˈɔːf test/
A one-off test is a test that happens only one time.
The teacher gave us a one-off test to see what we already knew.
RELATED WORDS
OTHER MEANINGS
2. A test that is not repeated or part of a regular series.
This was a one-off test, so we won't have another one like it.
3. A special test done just once for a particular purpose.
The engineers ran a one-off test on the new machine.
4. A trial that is not part of a standard schedule.
The one-off test helped them decide whether to change the rules.