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WordReference Random House Learner's Dictionary of American English © 2024scan•ner /ˈskænɚ/USA pronunciation n. [countable]- a person or thing that scans.
a device that scans, such as one that uses radar to detect or examine distant objects.a device for examining a body, organ, or tissue.See -scend-. WordReference Random House Unabridged Dictionary of American English © 2024scan•ner (skan′ər),USA pronunciation n. - a person or thing that scans.
- optical scanner. See under optical scanning.
- Photographyany device for exposing an image on film, a sensitized plate, etc., by tracing light along a series of many closely spaced parallel lines.
- Surveying(in aerial photography) a device for estimating the ratio of aircraft speed to aircraft altitude.
- Electronicsa photoelectric device for scanning a picture to determine automatically the density of the hue or value in each area for transmission by wire or radio or for preparation of color process printing plates.
- Printing, Electronicsa computer-aided electronic system using photoelectric cells to separate copy, as color illustrations, into its primary colors, correct color copy, and produce a set of color separations ready for proofing or printing.
- Radio and Televisiona radio receiver, used esp. by police, firefighters, and the press, that continuously tunes to preselected frequencies, broadcasting any signal that it detects.
- Medicinea device for examining a body, organ, tissue, or other biologically active material. Cf. CAT scanner, MRI scanner, PET scanner, sonogram.
Collins Concise English Dictionary © HarperCollins Publishers:: scanner /ˈskænə/ n - a person or thing that scans
- a device, usually electronic, used to measure or sample the distribution of some quantity or condition in a particular system, region, or area
- an aerial or similar device designed to transmit or receive signals, esp radar signals, inside a given solid angle of space, thus allowing a particular region to be scanned
- any of various devices used in medical diagnosis to obtain an image of an internal organ or part
- short for optical scanner
- an electronic device which scans printed material and converts it to digital form
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