Definition of filtrate in US English:



  • A liquid which has passed through a filter.

    ‘filtrates of bacterial cultures’
    ‘drops of clear filtrate’
    • ‘In the majority of the studies we reviewed, the material administered to the animal was the dried filtrate of a water extract that had been prepared from dried leaves.’
    • ‘Then a clear filtrate with no cells or bacteria was used to inoculate another chicken, which would then develop a tumor.’
    • ‘Mixtures of solution and resin were filtered through a 0.45 m filter and filtrates freeze-dried.’
    • ‘During the gravity filtration the filtrate passes through the filter medium under the combined forces of gravity and capillary attraction between the liquid and the funnel stem.’
    • ‘After passage through glass fiber filter paper, the filtrate was concentrated using a rotary vacuum evaporator.’


[with object]rare
  • Filter.

    ‘the remaining alkali is filtrated’
    • ‘Sperm were filtrated and stained on the filter.’
    • ‘It bubbles up from a great depth and is naturally filtrated, then bottled and hermetically sealed in 19-litre containers.’
    • ‘Shrugging, the teen walked over to the window above the sink: some light had managed to filtrate between the cobwebs and the dust.’
    • ‘So he sighed and let the memories overwhelm him, talking as he went, not filtrating what he said.’
    • ‘It is more normally used to filtrate drinking water and in small amounts is not harmful.’
    ooze, trickle, exude, drip, dribble, flow, issue, discharge, excrete, escape, leak, drain, bleed, sweat, well, leach, filter, percolate, permeate, soak
    View synonyms


Early 17th century: from modern Latin filtrat- ‘filtered’, from the verb filtrare, from medieval Latin filtrum (see filter).