1.   The waves had an abrasive action on the rocks.

2.   Veterinarian and author Terri McGinnis says the abrasive action of this food probably helps prevent the build-up of tartar.

3.   Sastrugi are wavelike ridges and furrows chiseled out of the ice or snow surface by the abrasive action of snow whipped through the air by wind.

4.   Such a condition is due to the abrasive action or application of potent solutions.