Definition of raster scan in US English:

raster scan

noun

Electronics
  • A line by line scan of area by an electron beam or other scanning device to read or produce an image (on a television screen, computer monitor, etc.); an image generated by such a scan.

verb

Electronics
  • with object Raster.

Origin

1950s; earliest use found in Electronics<br>1960s; earliest use found in Applied Physics Letters.