The term wireless is normally used to refer to any type of electrical or electronic operation which is accomplished without the use of a "hard wired" connection.
Wireless communication is the transfer of information over a distance without the use of electrical conductors or "wires".
The distances involved may be short (a few meters as in television remote control) or very long (thousands or even millions of kilometers for radio communications).
When the context is clear the term is often simply shortened to "wireless".
Wireless communications is generally considered to be a branch of telecommunications.
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