- a person or thing that scans.
- optical scanner.See under optical scanning.
- Photography. any device for exposing an image on film, a sensitized plate, etc., by tracing light along a series of many closely spaced parallel lines.
- (in aerial photography) a device for estimating the ratio of aircraft speed to aircraft altitude.
- a 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.
- a 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. a radio receiver, used especially by police, firefighters, and the press, that continuously tunes to preselected frequencies, broadcasting any signal that it detects.
- Medicine/Medical, Biology. a device for examining a body, organ, tissue, or other biologically active material.
Origin of scanner
Examples from the Web for scanner
But can a scanner the size of a TV remote really tell when that chicken goes bad?Can This Device Save You From Food Poisoning?
May 30, 2014
“If we can pop smoke we can get the wounded out of the way,” one reported on the scanner.How Christopher Dorner Went Down
February 14, 2013
Mike checked in at the 10th electoral district, got his ballot, made marks next to his choices and fed it into the scanner.Sandy’s Rockaway Victims Pause to Vote, Press On With Recovery Efforts
November 7, 2012
He stepped over to the privacy booth and then to the scanner machines.Anthony Weiner’s Election Day
September 13, 2011
Step Two: Search for "QR" or "Scanner" and download the highest-rated, or cheapest, app.How to Use a QR Reader
The Daily Beast
June 1, 2011
I'll get this scanner set up again, and we'll be ready to load out.The Players
Everett B. Cole
I had my scanner on, so they could see me, but my own screen stayed dark.The Misplaced Battleship
Harry Harrison (AKA Henry Maxwell Dempsey)
But with this scanner on, I think of where I want to look and I can see it.
James stopped talking, pulled out his scanner, stuck his face into it.
James pushed the button, glanced into his scanner, and froze; eyes staring.
- 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 partSee CAT scanner, nuclear magnetic resonance scanner, ultrasound scanner
- informal a television outside broadcast vehicle
- short for optical scanner
- printing an electronic device which scans printed material and converts it to digital form
Word Origin and History for scanner
1550s, "person who examines critically," agent noun from scan (v.). From 1927 as a type of mechanical device, in mid-20c. use especially of radar and medical devices; later of computer accessories.