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wireless (adj.)

1894, in reference to as a type of telegraph, from wire (n.) + -less. As a noun, "radio broadcasting," attested from 1903, subsequently superseded by radio.

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Definitions of wireless from WordNet
1
wireless (n.)
medium for communication;
Synonyms: radio / radiocommunication
wireless (n.)
transmission by radio waves;
wireless (n.)
an electronic receiver that detects and demodulates and amplifies transmitted signals;
Synonyms: radio receiver / receiving set / radio set / radio / tuner
wireless (n.)
a communication system based on broadcasting electromagnetic waves;
Synonyms: radio
2
wireless (adj.)
having no wires;
a wireless security system
From wordnet.princeton.edu