Definition of raster
: a scan pattern (as of the electron beam in a cathode-ray tube) in which an area is scanned from side to side in lines from top to bottom; also : a pattern of closely spaced rows of dots that form an image (as on the cathode-ray tube of a television or computer display)
Recent Examples of raster from the Web
Hollen hand-draws his designs in a raster program, converting them to a vector, a kind of blueprint read by an outsourced laser cutter that cuts the patterns.
NOAA eventually expects to phase out the raster charts, dedicating its resources instead to making the vector charts the premier nautical guide, Nyberg said.
Aside from spinning off a number of now-standard multimedia technologies, the Rutt-Etra Synthesizer was one of the first experimental video-effects machines, an analog video raster that allowed artists to manipulate live video images.
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Origin and Etymology of raster
borrowed from German Raster, originally, “screen used for printing halftones,” borrowed from Latin *rāster (presumed singular of rāstrī), rāstrum “hoe with two to six tines,” from rādere “to scrape, scratch, pare away, shave” + -trum, suffix of instruments (going back to Indo-European *-tro-) — more at rase
First Known Use: 1934See Words from the same year
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