Filtration
/fɪlˈtreɪʃən/noun
The process of passing a liquid or gas through a filter to remove impurities.
Did you know?The word ultimately comes from Latin *filtrum*, meaning “felt,” because early filters were made from felted cloth that trapped particles as liquid passed through.
Etymological Timeline
Latin
Latin
filtrum
“felt”
Late Latin
Latin
filtrare
“to strain through felt”
Middle French
Old French
filtrer
“to filter or strain”
14th–15th Century
English
filter
“a device or material for straining liquids”
17th Century
English
filtration
“the act or process of filtering”