decode

[dee-kohd]
verb (used with object), decoded, decoding.
1.
to translate (data or a message) from a code into the original language or form.
2.
to extract meaning from (spoken or written symbols).
3.
Television. to unscramble (an electronic signal) so as to provide a video picture for cable subscribers.
verb (used without object), decoded, decoding.
4.
to work at decoding.

Origin:
1895–1900; de- + code

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
decode (diːˈkəʊd)
 
vb
1.  to convert (a message, text, etc) from code into ordinary language
2.  computing Compare encode to convert (coded characters) from one form to another, as from binary-coded decimals to decimal numbers
3.  electronics to convert (a coded electrical signal) into normal analogue components
4.  to analyse and understand the construction of words and phrases, esp in a foreign language
 
de'coder
 
n

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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Etymonline
Word Origin & History

decode
1896, from de- + code. Related: Decoding (1897).
Online Etymology Dictionary, © 2010 Douglas Harper
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FOLDOC
Computing Dictionary

decode definition

cryptography
To apply decryption.
(2004-05-22)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
The problem was no devices existed to see and decode the neural maze in live
  subjects.
Since each nucleotide has a different shape, the result can be used to decode
  their order.
So researchers have been racing to decode the tree's genome in hopes of finding
  ways to genetically dial up resistance.
Poe liked ciphers because he liked to send messages that readers lacking his
  particular genius could not decode.
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