F, or f, is the sixth letter of the Latin alphabet and many modern alphabets influenced by it, including the modern English alphabet and the alphabets of all other modern western European languages.
f, letter that corresponds to the sixth letter of the Greek, Etruscan, and Latin alphabets, known to the Greeks as digamma. The sound represented by the letter in Greek was a labial semivowel similar to the English w.
F is the sixth letter in the English alphabet. In calendars, F is often an abbreviation for Friday, or for the month February. In chemistry, F is the symbol for fluorine. In music, F is a note, sometimes referred to as “Fa”. In temperature, °F is degrees Fahrenheit.