AskDefine | Define scanning

Dictionary Definition



1 the act of scanning; systematic examination of a prescribed region; "he made a thorough scan of the beach with his binoculars"
2 an image produced by scanning; "he analyzed the brain scan"; "you could see the tumor in the CAT scan" [syn: CAT scan]


1 examine minutely or intensely; "the surgeon scanned the X-ray"
2 examine hastily; "She scanned the newspaper headlines while waiting for the taxi" [syn: skim, rake, glance over, run down]
3 make a wide, sweeping search of; "The beams scanned the night sky"
4 conform to a metrical pattern
5 move a light beam over; in electronics, to reproduce an image
6 read metrically; "scan verses"
7 obtain data from magnetic tapes; "This dictionary can be read by the computer" [syn: read] [also: scanning, scanned]scanning


1 the process of translating photographs into a digital form that can be recognized by a computer
2 the act of systematically moving a finely focused beam of light or electrons over a surface in order to produce an image of it for analysis or transmissionscanning See scan

User Contributed Dictionary





Extensive Definition

Scan may refer to:
Scanning may refer to:
  • Scanning, in television, facsimile, and picture transmission, the process of sequentially encoding the luminosity and optionally the color of a picture or scene, line by line into an electronic signal. It also refers to remotely reconstructing the picture or scene on a display device.
  • Scanning, in telecommunications, the process of rapidly tuning a radio receiver through a predetermined range of frequencies to select an active radio broadcast. Scanning may be performed manually or automatically.
  • Scanning, in radar and radio direction-finding, the slewing of an antenna or radiation pattern for the purpose of probing in a different direction. In radar, scanning may be mechanical, using a rotary microwave joint to feed the antenna, or electronic, using a phased array of radiators, the radiated pattern (beam) of which depends on the relative phases of the signals fed to the individual radiators. In civilian air traffic control radar, scanning usually implies continuous rotation of the antenna or beam about a vertical axis. In military radars, scanning may occur about other than a vertical axis, and may not encompass a full 360°.
  • Scanning, in teaching reading, the technique for quickly finding specific information in a text while ignoring its broader meaning.
  • Scanning, in the semiconductor electronics testing industry, to test the logic used in an integrated circuit in a non-functional method by using a special test mode. This mode generally changes the configuration of the device being tested to look more similar to a large shift register. Logical blocks are then tested by loading and unloading this register. (See for instance JTAG Boundary Scan.)
  • Scanning, a term for the medical technique for body imaging.
  • Scanning, the term for the lowest-level work of a software compiler, putting together the individual characters of the text of a computer program to form lexemes.
  • Scanning, a behaviour in which prey animals look around for possible predators.

See also


scanning in German: Scannen
scanning in Esperanto: Skanado
scanning in Dutch: Scanning
scanning in Russian: Wikipedia:Встречное сканирование
scanning in Russian: Wikipedia:ВС
scanning in Russian: Wikipedia:ВСИ

Synonyms, Antonyms and Related Words

EDP, Stabreim, alliterative meter, analyzing, antispastic, automatic tracking, cadenced, classifying, collating, computer technology, computer typesetting, computing, dactylic, data processing, data retrieval, data transmission, electronic data processing, flector tuning, high-speed data handling, iambic, interlaced scanning, locking on, locking signals, machine computation, mapping, measure, measured, meter, metric, metrical pattern, metrics, mixing, monitoring, numbers, phase adjustment, pinpointing, precision focusing, prosodic, prosodic pattern, prosody, pyrrhic, quantitative meter, radar navigation, radar-telephone relay, range finding, reporting, rhythmic, scan conversion, scansion, shading, signal modulation, sorting, spondaic, switching, syllabic meter, telecasting, televising, three-pointing, tracking, triangulation, triggering signals, trochaic, vers libre, versification
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