filtrationfil‧tra‧tion /fɪlˈtreɪʃən/ noun [uncountable] 
Examples
ExamplesEXAMPLES FROM OTHER DICTIONARIES
Collocations- a water filtration system
- Aquarium filtration systems based on organic filters also have problems because toxins build up in the water, Fahs said.
- They appreciate an area of water current, and power filtration may be internal or external.
- What filtration would be suitable, if undergravel would affect the plants?
- When caffeine blocks these receptors, blood vessels dilate, increasing the filtration rate and producing more urine.
- Will I sacrifice water quality by reducing filtration?
- Your first question should be: Why is filtration necessary in the fish tank?
COLLOCATIONS FROM THE CORPUSADJECTIVE► biological
the process of cleaning a liquid by passing it through a filter· Without oxygen Biological filtration ceases leading to increase in Ammonia/Nitrite levels.· The next chamber or chambers generally hold the main media, aimed at biological filtration.· Foam media is also supplied in some units as the main source of biological filtration.· Not only can it be introduced by contaminated water changes but it is also self-generated as part of the biological filtration cycle.· It passes through a sponge where mechanical and biological filtration takes place, and is then passed back on to the water.
► glomerular· This caution can not be overstated in light of the decreased glomerular filtration often present in chronic liver failure.· The fractional excretion of magnesium rises as glomerular filtration rate falls.· Changes in glomerular filtration rate and filtered load of sodium are regularly and continuously paralleled by comparable alterations in tubular fluid reabsorption.· Patients with impaired glomerular filtration rate are particularly susceptible to hypermagnesemia when given a magnesium load.
NOUN► rate· Glomerular filtration rate did not vary.· When caffeine blocks these receptors, blood vessels dilate, increasing the filtration rate and producing more urine.· The fractional excretion of magnesium rises as glomerular filtration rate falls.· Changes in glomerular filtration rate and filtered load of sodium are regularly and continuously paralleled by comparable alterations in tubular fluid reabsorption.· Patients with impaired glomerular filtration rate are particularly susceptible to hypermagnesemia when given a magnesium load.
► system· Ammonia is the toxic waste produced by the fish and this is initially bacterially broken down to nitrite in your filtration system.· Something about a reverse osmosis filtration system, which is too tricky to explain now.· Often, a filtration system that is not up to the job, or overstocking, or both.· It also makes filtration systems for homes and offices.· Consider adding a filtration system to your pond.· Aquarium filtration systems based on organic filters also have problems because toxins build up in the water, Fahs said.· Some of the filtration systems are just as outdated and ready for modification.· The filtration system is relatively simple, Sanders said.
► undergravel· U Undergravel filtration uses the gravel as filter medium.· It has undergravel filtration run by two powerheads, with a protein skimmer.· An under-layer of cheaper gravel can provide the depth required for terracing, planting, or undergravel filtration.· The rock mixture is 80% tufa rock and 20 percent living rock. Undergravel filtration is powered by two Aquaclear 402 powerheads.· Power filters are generally more efficient and versatile than simple undergravel filtration.· Would reverse flow undergravel filtration be better?· Also, would you recommend traditional or reverse-flow undergravel filtration for a mixed set-up?· I prefer reverse-flow undergravel filtration and an Eheim 2215 would suit your purposes quite well.
VERB► use· Once your water is soft it is easily acidified using peat filtration.· I use undergravel and external filtration, and a protein skimmer.