on-the-flychecking

noun
UK /ˌɒn ðə ˈflaɪ tʃekɪŋ/
US /ˌɑːn ðə ˈflaɪ tʃekɪŋ/

Checking something quickly while you are doing it, without stopping.

The teacher did some on-the-flychecking of our answers as we worked.


OTHER MEANINGS

2. Testing something immediately as it happens, like a computer checking data while it runs.

The app uses on-the-flychecking to catch spelling mistakes as you type.

3. A fast look at something without planning it ahead of time.

During the trip, Mom did on-the-flychecking of the map to make sure we were going the right way.

4. Checking work at the moment it is done instead of later.

On-the-flychecking helped the team fix mistakes before the project was finished.