starchindicator

noun
UK /ˈstɑːtʃˌɪndɪkeɪtə/
US /ˈstɑːrtʃˌɪndɪkeɪtər/

A starch indicator is a special liquid that changes color to show if starch is there.

The teacher put a drop of starch indicator on the potato, and it turned blue.


OTHER MEANINGS

2. A substance used in science labs to detect the presence of starch in foods.

We used a starch indicator to check which foods contained starch.

3. A person or tool that points out where starch is found.

The lab assistant acted as a starch indicator, showing us the starchy samples.

4. A signal or sign that starch is present in a mixture.

The blue color was a starch indicator in the experiment.