Meanings
- uncountableA bidirectional, high-speed, networked wireless communication technology similar to Wi-Fi but using visible light instead of radio waves.
Since Li-Fi uses just the light, it can be used safely in aircrafts^([sic]) and hospitals that are prone to interference from radio waves.
2012, Jyoti Rani, Prerna Chauhan, Ritika Tripathi, “Li-Fi (Light Fidelity)-The future technology In Wireless communication”, in International Journal of Applied Engineering Research, volume 7, number 112 more examples
The beauty of Li-Fi is that it uses existing infrastructure, avoiding the need for thousands of radio masts, as the current spectrum requires.
2014, Infinite Magazine 2013-2014The vision is that a Li-Fi wireless network would complement existing heterogeneous RF wireless networks, and would provide significant spectrum relief by allowing cellular and wireless fidelity (Wi-Fi) systems to off-load a significant portion of wireless data traffic.
2015, Svilen Dimitrov, Harald Haas, Principles of LED Light Communications, →ISBN, page 5
Origin
Coined by Harald Haas, the inventor of the technology, after Wi-Fi and as an abbreviation of light fidelity.
Full word history & related roots →Translations
French lifi, LiFi
- lifiTranslations
- LiFiTranslations
- transmission par DELTranslations
- transmission par LEDTranslations
Cite this entry
Li-Fi. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/Li-Fi
“Li-Fi.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Li-Fi. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “Li-Fi,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/Li-Fi.
Source: Li-Fi on Wiktionary, CC BY-SA 4.0.