filter paper
1
3.4
- noun
- /ˈfɪltər ˈpeɪpər/
- Specialized
:
papel de filtro
- Germination test: Ten treated seeds were placed in each Petri plate, having two moist layers of Whatman No. 2 filter paper.
- Whatman filter paper
- collects on filter paper
- placed on filter paper
Examples
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A germination test was carried out in 11-cm Petri dishes, on two layers of filter paper moistened with 12 mL of the test solution.
Academic text (2014) -
Cells are placed on filter paper, and radiolabeled thymidine content is determined in a liquid scintillation counter.
Academic text (1996) -
Do we have the filter paper?
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And on that filter paper are bacterial colonies growing.
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Throughout the study, filter-paper testing was available at the CPHS office in each county.
Academic text (2005) -
Like always, you want to rinse your flask and the filter paper three times each.
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To remove undissolved lime, the solution was filtered using fine pore filter paper to achieve a clear solution.
Academic text (2016) -
Each of the eight cages contained an oviposition cup, a small black container lined with filter paper and half-filled with water.
Academic text (1992) -
The filter paper was cut into 1-cm² pieces and immediately transferred into a 50-mL pre-cleaned centrifuge tube.
Academic text (2018) -
In the laboratory, we used filter paper to separate the solid particles from the liquid mixture.
Synonyms
139
2.8
A thing that removes unwanted parts from water, air, light and sound
How Fine
- Specialized
- Specialized
1
3.4
- Specialized
1
4.1
- Specialized
9
3.8
Surface Forms
Morphology
The meaning 'a type of paper used for filtering' is directly and transparently derived from combining 'filter' (a device or material that removes impurities) with 'paper' (thin fibrous sheets). This simple noun–noun compounding follows normal English composition and has clear parallels in other languages, so a B1 learner who knows both constituents will readily infer the MWE meaning.
Etymology
Filter paper comes from a simple image: the paper acts like a very fine net and the filter holds back solid bits when you pour a cloudy liquid through it while the liquid passes through. So, filter paper means the paper used 'to separate' solids from liquids.