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1 definition by Craig St. John

 
1.
No-mo-pho-bia (\,nô-mə-`fô-bç-ə\) noun : an exaggerated, inexplicable, and illogical fear being without a mobile device, power source, or service area.

Origin: Dubbed by British experts who claim that state that fifty-three percent of mobile users, with forty-eight percent women and 58 percent of men questioned in their study admitted to experience feelings of anxiety when they run out of a battery or credit, lose their phone, or have no network coverage.
Urban Dictionary usage: “My phone don’t work no mo. I think I have nomophobia”
by Craig St. John March 31, 2008