—v.t. 1. to examine the particulars or points of minutely; scrutinize.
2. to glance at or over or read hastily: to scan a page. 3. to peer out at or observe repeatedly or sweepingly, as a large expanse; survey.
4. to analyze (verse) as to its prosodic or metrical structure; read or recite (verse) so as to indicate or test the metrical form.
5. to read (data) for use by a computer or computerized device, esp. using an optical scanner.
6. Television.to traverse (a surface) with a beam of light or electrons in order to reproduce or transmit a picture.
7. Radar.to traverse (a region) with a beam from a radar transmitter.
8. Med.,Biol.to examine (a body, organ, tissue, or other biologically active material) with a scanner.
—v.i. 1. to examine the meter of verse.
2. (of verse) to conform to the rules of meter.
3. Television.to scan a surface or the like.
—n. 1. an act or instance of scanning; close examination.
2. a visual examination by means of a television camera, as for the purpose of making visible or relaying pictures from a remote place: a satellite scan of the dark side of the moon; video scans of property listings available to customers. 3. a particular image or frame in such video observation or a photograph made from it.
4. Med.,Biol. a. examination of the body or an organ or part, or a biologically active material, by means of a technique such as computed axial tomography, nuclear magnetic resonance, ultrasonography, or scintigraphy.
b. the image or display so obtained.