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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

#nofilter

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

v.
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

v.
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

v.
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 ?
Table IV presents exact (k = 0) and approximate (k = 1, 2, 3) searching times using Agrep [Wu and Manber 1992], tagged (direct search on tagged Huffman), plain filterless (the basic algorithm on plain Huffman), and plain filter (the filter on plain Huffman, with Sunday filtering for blocks of 256 bytes).
7] The RF receiver features a simple filterless RF circuit based on an image rejection downconversion technique.
At any given moment during the day, there can be found a crowd of men arguing loudly about baseball; tourists looking slightly dazed and overheated; Rastafarians giving each other a brotherhood greeting and chain-smoking filterless Popular cigarettes; lovers, unaware of anyone but each other; and young schoolchildren asking foreigners for pens and gum.
trashy: people whose ears were a little too low (as a friend from Arkansas puts it), or who smoked, or worse still, who let filterless cigarettes dangle between their lips while they folded their clothes--an unforgivable breach of laundromat etiquette.
Additionally, the low EMI design of the device allows for filterless operation with high noise rejection using differential audio inputs, improving sound quality.
Two distinct styles of filterless vacuum receivers are now avauilable from Novatec, Baltimore.
The Council, which has had EnviroVent s Filterless Extract Fans set up in thousands of its properties in the previous 10 years, recognised that heatSava would assist decrease issues with condensation and mould growth.
This golf cart boasts high quality performance and comfort with an engine that includes a filterless oil system, maintenance-free rack-and-pinion steering, low maintenance internal disc brake system, and all terrain tires designed to drive up and down the hills and valleys of a golf course.
Summary: BEIRUT: Investigations at Rafik Hariri Airport International found wire cutters and two filterless cigarettes next to the hat of a man who had apparently tried Saturday to hitch a ride on the Saudi-owned Nas Air jet, a well-informed security source told The Daily Star Wednesday.
But Pets At Home say they will now campaign to see filterless tanks banned.
Maxim Integrated Products has announced the MAX9712 filterless, Class-D audio amplifier with Class-AB circuit simplicity and Class-AB audio performance combined with Class-D efficiency.
BROWN: I had to find a way early on to touch 140,000 people, and I use e-mail for fast, frequent, filterless communication twice a month.
The display will include static exhibits of their smaller range of conveyors, together with a working system transferring material in an enclosed dust-free operation using their latest vacuum conveyors for granules, powders and 'difficult' materials and a stainless steel Vortax unit using cyclone technology with vacuum to produce a filterless conveyor.
K-Tron also announces its Hurricane vacuum loader for filterless conveying of pellets and granular powders at up to 50,000 lb/hr.
Back in the days when smoking on the field wasn't taboo, he often cupped a filterless cigarette in his palm while watching batting practice or in the dugout.