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A scanning pattern of parallel lines that form the image projected on a cathode-ray tube of a television set or display screen.
[German, from Latin rāstrum, rake (from the resemblance of the parallel lines to a rake's path); see rēd- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Electronics) a pattern of horizontal scanning lines traced by an electron beam, esp on a television screen
2. (Broadcasting) a pattern of horizontal scanning lines traced by an electron beam, esp on a television screen
(Computer Science) to use web-based technology to turn (a digital image) into a large picture composed of a grid of black and white dots
[C20: via German from Latin: rake, from rādere to scrape]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. a pattern of scanning lines covering the area on which an image is projected on the cathode-ray tube of a TV set.
2. Computers. a set of horizontal lines composed of individual pixels, forming an image on a monitor.
[1934; < German: screen, network < Latin rāstrum toothed hoe, rake]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||raster - the rectangular formation of parallel scanning lines that guide the electron beam on a television screen or a computer monitor|
formation - a particular spatial arrangement
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.