1. the act or process of washing something before the main washing

1. present participle of prewash; washing something before the main washing

Examples

• The prewashing of heavily soiled clothes helps remove stubborn stains.
• She is prewashing the dishes before putting them in the dishwasher.
• Prewashing the fabric prevents colors from bleeding during the main wash.
• The laundromat offers prewashing services for extra dirty items.
• He spent time prewashing his work clothes after the construction job.
• The prewashing cycle on the washing machine takes about ten minutes.