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Feb 16, 2012
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Dictionary


scan'ning disk"



Television.
(in mechanical scanning) a disk with a line of holes spiraling in from its edge, rotated in front of a surface so as to expose a small segment as each hole passes before it for transmitting or reproducing a picture.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

scannerscanning electron microscope
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