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A marketing firm dreamed up the catchy, easy-to-say name we now use for wireless internet — and people have been guessing what it stands for ever since.

What does "Wi-Fi" actually stand for?

Nothing — it's just a brand name
"Wi-Fi" is not an abbreviation of anything. It was a catchy brand name chosen by a marketing firm; "Wireless Fidelity" was a slogan added later, not the original meaning.

Wi-Fi is not actually an abbreviation for anything technical, it was invented as a catchy, easy-to-pronounce brand name by a marketing firm hired to promote the wireless networking standard now known formally as IEEE 802.11. The phrase 'Wireless Fidelity' was added afterward as a slogan meant to evoke the term Hi-Fi, but it was never the actual origin of the name.

Believing Wi-Fi stands for Wireless Fidelity or some other technical phrase is an extremely common assumption, since the name sounds like it should be an acronym, but the organization that created it has confirmed it was chosen purely for its branding appeal.

This kind of brand name mistaken for a technical acronym is not unique to Wi-Fi, and it shows how a name chosen for how catchy it sounds can end up shaping how millions of people think about the underlying technology, regardless of its actual meaning.

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