Meaning of “F” in the English Dictionary

"F" in American English

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Fnoun

us /ef/ plural F’s or Fs

F noun (LETTER)

[ C ] plural F’s, Fs, f’s or fs also f the sixth letter of the English alphabet

F noun (MUSICAL NOTE)

music [ C/U ] plural F’s or Fs in Western music, the fourth note in the scale (= series of notes) that begins on the note C, or a set of notes based on this note

F noun (MARK)

[ C ] plural F’s or Fs a mark given for an exam, a course, or a piece of work which shows that your work has failed to meet the lowest acceptable standard:

I’m giving you an F if your paper isn’t in by Thursday.

F noun (TEMPERATURE)

[ U ] abbreviation forFahrenheit:

Yesterday the temperature was 90°F.

(Definition of “F” from the Cambridge Academic Content Dictionary © Cambridge University Press)