Ever notice how there are a lot of acronyms for computer stuff? API, BIOS, CPU, DOS (not to be confused with DoS), DRAM, GPU, HDD, RAM, ROM, and a whole lot more... It can get downright overwhelming.
Wi-Fi is a term used daily, often without consideration of its meaning or origin. There are many theories about what it actually stands for, for example Wi-Fi being an abbreviation of "Wireless ...