Definition

A process in water treatment where water is pushed backward through a filter to clean it, often using air to help remove dirt and debris.

Example

The technician performed backwashing on the filter to ensure it was clean and functioning properly.

Conversation

Have you ever heard of backwashing for pool filters?

Yeah, I think it’s when you pump water backwards through the filter, right?

Exactly! It’s important for keeping the water clean and clear.

I should try it out more often, especially before summer parties.

Synonyms & Antonyms

Root Explanation

Backwashing is formed from "back" (from Old English "bæc", meaning the rear or reverse side) and "washing" (from Old English "wascan", meaning to cleanse with water). The term refers to the process of reversing the flow of water to clean or flush out a system, typically in filtration processes.

Memory Tip

Think of the 'back' as the reverse direction and 'washing' as cleansing — backwashing means to cleanse by reversing the flow.

Visually Confused Words