raster

[ras-ter]

ras·ter

[ras-ter]
noun
1.
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.
Computers. a set of horizontal lines composed of individual pixels, used to form an image on a CRT or other screen.

Origin:
1950–55; < German < Latin rāstrum toothed hoe, rake, derivative of rādere to scratch, scrape
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Raster is always a great word to know.
So is gobo. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
Collins
World English Dictionary
raster (ˈræstə)
 
n
1.  a pattern of horizontal scanning lines traced by an electron beam, esp on a television screen
 
vb
2.  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 & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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FOLDOC
Computing Dictionary

raster definition

hardware
The area of a video display that is covered by sweeping the electron beam of the display in a series of horizontal lines from top to bottom. The beam then returns to the top during the vertical flyback interval.
See also CRT, frame buffer.
(1995-03-22)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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