backwashing
noun
backwashing is a noun meaning “A form of water treatment in which water is pumped backwards through the filter media, sometimes with intermittent use of compressed air” (English Wiktionary, September 2026). It is spelled B-A-C-K-W-A-S-H-I-N-G, and it appears about once in every 46 million words in written English (wordfreq, 2021 data). The plural of backwashing is backwashings.
What does backwashing mean?
noun
- 1
A form of water treatment in which water is pumped backwards through the filter media, sometimes with intermittent use of compressed air.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of backwashing
- backwashings plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is backwashing?
Backwashing appears about once in every 46 million words in written English, the 209,386th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Where does backwashing come from?
From back + washing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).