a person who decodes messages or the like. a device for decoding
cryptograms, codes, or the like, as an electric or electronic
apparatus that transforms arbitrary input signals into letters,
words, etc. Navigation. an electronic circuit designed to
respond only to certain signals and to reject others. Computers.
a circuit designed to produce a single output when actuated by a
certain combination of inputs. Television. a box attached to a
television set containing circuitry to unscramble encoded
signals, as cable-television programs or closed captions, so
that the signals can be displayed on the screen.  1915–20;
decode + -er1 Unabridged Cite This Source Link To decoder World
English Dictionary decode (diːˈkəʊd) 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 anal