undoingoperation
nounUK /ʌnˈduːɪŋ ˌɒpəˈreɪʃən/
US /ʌnˈduːɪŋ ˌɑːpəˈreɪʃən/
An undoing operation is a step that takes back or reverses something that was done.
The teacher used an undoing operation to erase the mistake on the board.
OTHER MEANINGS
2. In computing, a command that reverses the last action.
Press the undoing operation button to bring back the deleted text.
3. A medical procedure that reverses an earlier surgery.
The patient needed an undoing operation to remove the stitches.
4. A plan or action that cancels the effects of a previous plan.
The new law was an undoing operation for the old rules.