Capable of being filtered; able to be separated or purified using a filter.
From filter (from Latin filtrare, to strain, possibly from felt-like material used for filtering) + -able (from Latin -abilis, capable of). This Latin suffix creates adjectives meaning 'able to be' or 'capable of being.'
Viruses that can pass through standard bacterial filters are called 'filtrable viruses'—this term literally helped scientists discover that viruses were smaller and different from bacteria in the early 1900s!
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