having no wire.
noting or pertaining to any of various devices that are operated with or actuated by electromagnetic waves.
Chiefly British, radio.
wireless telegraphy or telephony.
a wireless telegraph or telephone, or the like.
any system or device, as a cellular phone, for transmitting messages or signals by electromagnetic waves.
a wireless message.
Chiefly British, radio.
verb (used with object), verb (used without object)
to telegraph or telephone by wireless.

1890–95; wire + -less

wirelessly, adverb
wirelessness, noun
prewireless, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
wireless (ˈwaɪəlɪs)
1.  communicating without connecting wires or other material contacts: wireless networks; wireless internet connection
2.  old-fashioned chiefly (Brit) another word for radio

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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Word Origin & History

1894, as a type of telegraph, from wire (n.) + -less. In ref. to radio broadcasting, attested from 1903, subsequently superseded by radio.
Online Etymology Dictionary, © 2010 Douglas Harper
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Computing Dictionary

wireless definition

A term describing a computer network where there is no physical connection (either copper cable or fibre optics) between sender and receiver, but instead they are connected by radio.
Applications for wireless networks include multi-party teleconferencing, distributed work sessions, personal digital assistants, and electronic newspapers. They include the transmission of voice, video, images, and data, each traffic type with possibly differing bandwidth and quality-of-service requirements. The wireless network components of a complete source-destination path requires consideration of mobility, hand-off, and varying transmission and bandwidth conditions. The wired/wireless network combination provides a severe bandwidth mismatch, as well as vastly different error conditions. The processing capability of fixed vs. mobile terminals may be expected to differ significantly. This then leads to such issues to be addressed in this environment as admission control, capacity assignment and hand-off control in the wireless domain, flow and error control over the complete end-to-end path, dynamic bandwidth control to accommodate bandwidth mismatch and/or varying processing capability.
Usenet newsgroup news:comp.std.wireless.
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
In its place, radio communications would provide instant, long-distance
  wireless communication.
Each cashier, after ringing up and bagging an order, pushes a button that sends
  a wireless signal to the screen.
Similarly, our equipment allows us to reveal and represent topographies of
  wireless networks.
The cheap wireless plans seemed too good to be true.
Image for wireless
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