supplementarycheck

noun
UK /ˌsʌplɪˈmentəri tʃɛk/
US /ˌsʌpləˈmɛntəri tʃɛk/

A supplementary check is an extra look to make sure something is right.

The teacher did a supplementary check of the answers before handing back the tests.


OTHER MEANINGS

2. An additional payment or bill added to a main one.

The hotel added a supplementary check for the minibar.

3. A second test or exam taken to add to a main result.

Students who missed the first test took a supplementary check in June.

4. An extra inspection done after the main one to catch mistakes.

A supplementary check of the machine found a loose screw.