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See also: wifi, WiFi, and wi-fi


Wi-Fi logo

Alternative forms[edit]


Coined in analogy to hi-fi as a trade name developed for the Wireless Ethernet Compatibility Alliance (later Wi-Fi Alliance).

Often analyzed as a shortened form of wireless fidelity (similar to how hi-fi is a shortened from high fidelity); this is possibly due to the former slogan of the aforementioned Wi-Fi Alliance, The Standard for Wireless Fidelity.


  • IPA(key): /ˈwaɪ.faɪ/
  • (file)
  • Rhymes: -aɪfaɪ


Wi-Fi (uncountable)

  1. (computing) Any of several standards for short-range wireless data transmission (IEEE 802.11).
    Coordinate terms: Bluetooth, GPRS, IrDA, wireless internet, WISP, WLAN
  2. (computing) Wireless networking using one of these standards.
    I'll send the file using Wi-Fi.
    This coffee shop has Wi-Fi for its customers.
  3. (informal) The capability to connect to a Wi-Fi network.
    The refrigerator cost 1000 more dollars just because it had Wi-Fi, and I'm thinking "this is ridiculous"!

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Wi-Fi m or f (in variation) (usually uncountable, plural Wi-Fis)

  1. Alternative spelling of wi-fi