Effacement (noun)

1. The act of effacing or wiping out, especially of a writing, image or mark.
2. The act of making oneself inconspicuous or unnoticeable.
3. In obstetrics, the thinning and shortening of the cervix during the first stage of labor in preparation for delivery.

Origin:

From french effacement, from effacer (to wipe out, erase).

Examples:

1. The effacement of the writing on the wall was done with great care.
2. The effacement of the graffiti was carried out by volunteers.
3. The effacement of the defendant's past crimes was not allowed by the court.
4. The effacement of the actress was intentional in order to blend into the crowd.
5. The effacement of the cervix indicated that the baby was ready to be born.