Lexic.us

Definition of Filter

1. Verb. Remove by passing through a filter. "Filter out the impurities"

2. Noun. Device that removes something from whatever passes through it.

3. Verb. Pass through. "Water permeates sand easily"

4. Noun. An electrical device that alters the frequency spectrum of signals passing through it.

5. Verb. Run or flow slowly, as in drops or in an unsteady stream. "Water and oil filter into the bowl"; "Reports began to dribble in"

Definition of Filter

1. n. Any porous substance, as cloth, paper, sand, or charcoal, through which water or other liquid may passed to cleanse it from the solid or impure matter held in suspension; a chamber or device containing such substance; a strainer; also, a similar device for purifying air.

2. v. t. To purify or defecate, as water or other liquid, by causing it to pass through a filter.

3. v. i. To pass through a filter; to percolate.

4. n. Same as Philter.

Definition of Filter

1. Noun. A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another. ¹

2. Noun. Electronics or software that separates unwanted signals (for example noise) from wanted signals or that attenuates selected frequencies. ¹

3. Noun. Any item, mechanism, device or procedure that acts to separate or isolate. ¹

4. Noun. (mathematics order theory) A non-empty upper set (of a partially ordered set) which is closed under binary infima (a.k.a. meets). ¹

5. Verb. (transitive) To sort, sift, or isolate. ¹

6. Verb. (transitive) To diffuse; to cause to be less concentrated or focused. ¹

7. Verb. (intransitive) To pass through a filter or to act as though passing through a filter. ¹

8. Verb. (intransitive) To move slowly or gradually; to come or go a few at a time. ¹

9. Verb. (intransitive) To ride a motorcycle between lanes on a road ¹

¹ Source: wiktionary.com

Definition of Filter

1. to pass through a filter (a device for removing suspended matter) [v -ED, -ING, -S]

Medical Definition of Filter

1. 1. A porous substance through which a liquid or gas is passed in order to separate it from contained particulate matter or impurities. Synonym: filtrum. 2. To use or to subject to the action of a filter. 3. In diagnostic or therapeutic radiology, a plate made of one or more metals such as aluminum and copper that, placed in the x-or gamma-ray beam, permits passage of a greater proportion of higher energy radiation and attenuation of lower and less desirable energy radiation, raising the average energy or hardening the beam. 4. A device used in spectrophotometric analysis to isolate a segment of the spectrum. 5. A mathematical algorithm applied to image data for the purpose of enhancing image quality, usually by suppression of high spatial frequency noise. Origin: Mediev. L. Filtro, pp. -atus, to strain through felt, fr. Filtrum, felt (05 Mar 2000)

Lexicographical Neighbors of Filter

filopodium filopressure filos filose filoselle filoselles filovaricosis filoviridae filoviridae infections filovirus

filovirus infections filoviruses fils filst filsten filter (current term) filter-feeder filter-feeders filter-tipped filter-tipped cigarette

filter bank filter bed filter down filter fabric filter feeder filter feeders filter funnel filter funnels filter lane filter lanes

Literary usage of Filter

Below you will find example usage of this term as found in modern and/or classical literature:

1. A French-English Dictionary for Chemists by Austin McDowell Patterson (1921)
"à aspiration, suction filter. — о bougie, candle filter, cylinder filter. ... vr be filtered, filter. — dans le vide, filter in vacuo, filter with suction. ..."

2. Methods of Practical Hygiene by Karl Bernhard Lehmann (1893)
"filter itself, and pervade it so that the filtrate is often richer in bacteria ... The manner in which the action of a filter is tested as regards chemical ..."

3. American Druggist (1889)
"filter paper, beaten or shaken into a pulp, can be put to a variety of uses. ... All torn filters, filter trimmings, and scraps of clean filter paper are ..."

4. Standard Methods of Chemical Analysis: A Manual of Analytical Methods and by Wilfred Welday Scott (1922)
"A filter two inches thick and lj.inches in diameter is effective in removing suspended matter completely with gas passing through it at the rate of 2 to 3 ..."

5. Public Water-supplies: Requirements, Resources, and the Construction of Works by Frederick Eugene Turneaure, Harry Luman Russell, Daniel Webster Mead (1908)
"General Description of the Rapid Sand filter. — This type ol filter, also called the "mechanical filter" and the ..."

6. Niosh Manual of Analytical Methods: Sampling and Analytical Methods for ...edited by Peter M. Eller edited by Peter M. Eller (1994)
"Handle the filter with forceps. Pass the filter over an antistatic radiation source. Repeat this step if filter does not release easily from the forceps or ..."

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