testsolution

noun
UK /ˈtɛst səˈluːʃən/
US /ˈtɛst səˈluːʃən/

A test solution is a special mix used to check or try something out.

The scientist used a test solution to see if the water was clean.


OTHER MEANINGS

2. A way to fix a problem found during a test.

The team found a test solution for the broken machine.

3. An answer key used to grade a test.

The teacher kept the test solution in a locked drawer.

4. A liquid made for checking how something works in a lab.

She added a drop of test solution to the dish.