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filter down

1. (literally) Of a liquid, to slowly seep down through lower substrate levels. The company bottles rainwater that has filtered down through seven layers of volcanic rock, purifying it and enriching it with minerals.
2. (by extension) Of information, resources, communication, etc., to move slowly and in small amounts down to lower levels of people in an organization, population, or group. It always takes a dog's age for any important company information to filter down to me and the other interns. The government has approved a staggering $200 billion stimulus package, but some experts warn it could be years before that money filters down to individuals and smaller businesses.
See also: down, filter

filter up

Of information, resources, communication, etc., to move slowly and in small amounts up to higher levels of people in an organization, population, or group. Local think-tanks are developing new, pragmatic strategies to deal with the burgeoning housing crisis, but they are unlikely to filter up to the agenda of state lawmakers anytime soon.
See also: filter, up


A common hashtag on the social media and photo-sharing platform Instagram for pictures that have not been altered with the variety of filters offered in the app. What a gorgeous sunset tonight. #nofilter

filter in

 (to some place)
1. Lit. to leak or seep into some place. The smell of bacon cooking filtered into his room and made him wake up. The smoke filtered in and burned our eyes.
2. Fig. [for people] to come into a place, a few at a time, over a period of time. One by one, the guests filtered into the room. They filtered in and started on the snacks.
See also: filter

filter something out of something

 and filter something out
to remove something from a fluid by running it through a filter. We filtered the odors out of the water and made it fit to drink. I'm glad you filtered out the odor.
See also: filter, of, out

filter through (something)

to pass or seep through something. The water filtered through the coffee grounds and dripped into the pot. The clear water filtered through and left the sand behind.
See also: filter, through

filter down

To pass or spread downward from an upper level to lower levels, as through a filter: The information slowly filtered down from management to the hourly employees.
See also: down, filter

filter out

To prevent something from passing through, being communicated, or being perceived: My new glasses filter out ultraviolet rays. These headphones filter unwanted noise out.
See also: filter, out

filter through

To be allowed to pass through something or to find a way through something, especially an obstacle: The sunlight filtered through the thin curtains.
See also: filter, through

bozo filter

n. a setting on an internet email reader that will filter out selected annoying people. (Refers to bozo, a jerk.) Welcome to my bozo filter, jerk!
See also: bozo, filter
References in periodicals archive ?
Industrial & Mobile Equipment Fluid Power Filters 110
These are the two most over-looked filters for the Firefinder.
So, if you have a forever-clean filter then you need to seal the ductwork, plain and simple.
SnapFind queries are constructed using examples; the user builds Diamond filters for desired colors or visual textures by selecting sample patches.
Through preliminary tests, it was discovered that an inoculant filter could function as the primary inoculant and replace the need for stream inoculation entirely.
Good air conditioning will already filter the air, so the filter we suggest may not make much difference in addition.
Baltimore's public library system, the Enoch Pratt Free Library, currently does not filter Internet access, ".
Skurauskis continues, "In the regulated states like Florida and Texas, 95 percent of the filters are collected and recycled, with a few DIY customers throwing them in the trash.
How filters are affected by moisture and whether they are engineered to control it are worth investigating.
as pouring continues, inclusions may begin to accumulate on the filter face and form a "cake" of material that filters out even finer particles;
ReZist filters contain a hydrophobic PTFE membrane.
This report analyzes the worldwide markets for Air Filters & Filtration Equipment in US$ Million by the following product group/segments - Automotive Air Filters, Cartridge Air Filters, Electrostatic Air Filters, Fabric Air Pollution Filters, HVAC Air Filters, and Other Air Purification Filters.
Management determined that conventional disk filters would not be compatible with existing mill equipment and would cope poorly with frequent grade changes and the high level of white water sediments.
High-efficiency filters are rated at 60 to 95 percent efficiency, and are sometimes confused with High Efficiency Particle Arrestance (HEPA) filters, which are defined as being 99.
Others can define filters that give special treatment to messages that do not contain certain words.