From Longman Dictionary of Contemporary Englishfiltrationfil‧tra‧tion /fɪlˈtreɪʃən/ noun [uncountable] SEPARATEthe process of cleaning a liquid by passing it through a filter
Examples from the Corpus
filtration• Aquarium filtration systems based on organic filters also have problems because toxins build up in the water, Fahs said.• Your first question should be: Why is filtration necessary in the fish tank?• They appreciate an area of water current, and power filtration may be internal or external.• Will I sacrifice water quality by reducing filtration?• When caffeine blocks these receptors, blood vessels dilate, increasing the filtration rate and producing more urine.• a water filtration system• What filtration would be suitable, if undergravel would affect the plants? 