raster

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˈræstə/US:USA pronunciation: respellingUSA pronunciation: respelling(ras′tər)


WordReference Random House Unabridged Dictionary of American English © 2026
ras•ter  (ras′tər),USA pronunciation n. 
  1. Radio and Television[Television.]a pattern of scanning lines covering the area upon which the image is projected in the cathode-ray tube of a television set.
  2. Computinga set of horizontal lines composed of individual pixels, used to form an image on a CRT or other screen.
  • Latin rāstrum toothed hoe, rake, derivative of rādere to scratch, scrape
  • German
  • 1950–55

Collins Concise English Dictionary © HarperCollins Publishers::
raster /ˈræstə/ n
  1. a pattern of horizontal scanning lines traced by an electron beam, esp on a television screen
Etymology: 20th Century: via German from Latin: rake, from rādere to scrape

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