F Definition
 ef 
    noun
  
 The sixth letter of the English alphabet: a modification of the Old Greek digamma (F), ultimately from the Phoenician.
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Any of the speech sounds that this letter represents, as, in English, the (f) of fire.
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A type or impression for f or F.
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The sixth in a sequence or group.
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An object shaped like F.
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Synonyms: 
  - atomic number 9
 - fluorine
 - degree-fahrenheit
 - farad
 - f
 
    abbreviation
  
 Femto-
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Frequency.
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Forte.
 American Heritage 
Function of.
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Furlong(s)
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    adjective
  
 Of f or F.
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Sixth in a sequence or group.
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Shaped like F.
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    symbol
  
 Fluorine.
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    affix
  
 Fighter.
 F-16
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