f

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f Numismatics face value
• Music fah (in tonic sol-fa)
• symbol for femto- (prefix indicating 10-15, as in fm, femtometre)
• (or f/, f:) Photog. f-number (ratio of the focal length of a lens to its aperture, as in f8)
• (ital.) Physics, symbol for focal length
• foreign
• (ital.) Music forte (Italian; loudly)
• (ital.) Physics, symbol for frequency
• (ital.) Physical chem., symbol for fugacity
• (ital.) Maths., symbol for function (as in f(x))
• (ital.) Biochem., symbol for furanose
• Chem., Physics, indicating electron state l=3 (where l is orbital angular momentum quantum number)
• indicating the fifth vertical row of squares from the left on a chessboard

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