prefilter
First-stage strainer
A prefilter is a preliminary filter that removes larger particles or impurities before material passes through a finer main filter.
In air purification systems, a prefilter catches dust and debris to extend the life of HEPA filters.
In photography and audio, prefiltering processes a signal before the main operation: The software prefilters the image to reduce noise.
The verb means to filter in advance.
Display or barrier
- meshInterlocking open weave
- strainerPerforated draining vessel
- sieveMesh filtering utensil
- barrierObstruction preventing passage
membrane · cartridge · sediment · particles · debris · trap · intercept · separate
Remove dirt or sin
- purifyRemove unwanted substances
- clarifyMake something understandable
- refineRemove impurities from
- decontaminateRemove harmful substances
sediment · pre-treatment · water · air · HVAC · aquarium · pool · desalinate
Evaluative selection process
- assessmentFormal evaluation of worth
- preprocessingInitial data preparation steps
- initialName's opening letter
- upstreamToward a river's origin
preparatory · rough · coarse · exploratory · baseline · intake · triage · early-stage
screen
Display or barrier
barrier · membrane · cartridge · sediment · particles · debris · trap · intercept · separate · percolate
cleanse
Remove dirt or sin
decontaminate · sediment · pre-treatment · water · air · HVAC · aquarium · pool · desalinate
screening
Evaluative selection process
- assessmentFormal evaluation of worth
- preprocessingInitial data preparation steps
- initialName's opening letter
upstream · preparatory · rough · coarse · exploratory · baseline · intake · triage · early-stage · front-end
exclude
Bar from participation
cull · winnow · sift · sort · separate · eliminate · omit · extract · isolate · discriminate
- air filtersHEPA, prefilters
- Filtrationprefilters, reverse osmosis, permeate, microns, backwash
- membrane filtrationreverse osmosis, semipermeable, membrane technology, hollow fiber, permeability
- respirator partsfacepiece, canister, cartridge, straps, strap
- maple sugaringmaple syrup, maple sap, sugarhouse, sugar shack, sugarbush
- Cleanroomsbunny suit, laminar flow hood, anteroom, sticky mat, positive pressure
prefilterunfiltered
Not passed through screen
pass-through · bypass · mixer · combiner · aggregator