backwashing (plural backwashings)
A form of water treatment in which water is pumped backwards through the filter media, sometimes with intermittent use of compressed air.
Source: Wiktionary
Back"wash`, v. i.
Definition: To clean the oil from (wood) after combing.
Source: Webster’s Unabridged Dictionary 1913 Edition
29 September 2024
(noun) the technical aspects of doing something; “a mechanism of social control”; “mechanisms of communication”; “the mechanics of prose style”
The Boston Tea Party helped popularize coffee in America. The hefty tea tax imposed on the colonies in 1773 resulted in America switching from tea to coffee. In the lead up to the Revolutionary War, it became patriotic to sip java instead of tea. The Civil War made the drink more pervasive. Coffee helped energize tired troops, and drinking it became an expression of freedom.