WORD ORIGIN noun . Television a pattern of scanning lines covering the area upon which the image is projected in the cathode-ray tube or liquid-crystal display of a television set or other screen. . Digital Technology a set of horizontal lines composed of individual pixels, used to form an image on a screen or in matrix printing. Origin of raster 1950–55; < German < Latin rāstrum toothed hoe, rake, derivative of rādere to scratch, scrape
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for raster noun a pattern of horizontal scanning lines traced by an electron beam, esp on a television screen verb to use web-based technology to turn a digital image into a large picture composed of a grid of black and white dots Word Origin for raster
C20: via German from Latin: rake, from
rādere to scrape
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for raster n.
1934 in electrical engineering, from German
Raster "screen, frame," from Latin rastrum "rake," from rasum, from rodere "to scrape" (see raze). Related: Rasterization; rasterize. From Latin form rastellum comes French râteau "rake," formerly ratel, originally rastel.
Online Etymology Dictionary, © 2010 Douglas Harper