English

Initialism

F1

1. F1 hybrid
2. Formula One / Formula 1
3. (weather) A rating of F1 on the Fujita scale
4. a computer keyboard key, short for function 1.
5. (slang, dated) help or advice (derived from the common usage of "F1" as the help key, during the DOS era of computing programs)

(Can we add an example for this sense?)

Coordinate terms

• (weather): F0, F2, F3, F4, F5
• (FIA Formula 1): F2, F3, F1600, F2000, F3000, GP1, GP2, GP3

Related terms

• (weather): EF0, EF1, EF2, EF3, EF4, EF5

See also

• (weather): Fujita Scale on Wikipedia.Wikipedia

References

• Storm Prediction Center (accessed 2010-02-03), “Fujita Scale”, in (Please provide the title of the work)