- folios
- following (pages, lines, etc)
- fortissimo: an instruction to play very loudly
WordReference Random House Unabridged Dictionary of American English © 2026
ff,
- folios.
- (and the) following (pages, verses, etc.).
- Music and Dancefortissimo.
Collins Concise English Dictionary © HarperCollins Publishers::
ff symbol for
F, f /ɛf/USA pronunciation
n. [countable], pl. F's or Fs, f's or fs.
F, an abbreviation of:
F, Symbol.
F., an abbreviation of:
f., an abbreviation of:
WordReference Random House Unabridged Dictionary of American English © 2026- Linguisticsthe sixth letter of the English alphabet, a consonant.
F, an abbreviation of:
- Educationfemale.
- Currencyfranc.
F, Symbol.
- the sixth in order or in a series.
- Educationa grade indicating academic work of the lowest quality:He got an F in chemistry.
- PhysicsFahrenheit:Water turns to ice at 32°F (said as "32 degrees Fahrenheit'').
F., an abbreviation of:
- PhysicsFahrenheit.
- February.
- franc.
- Friday.
f., an abbreviation of:
- Weights and Measuresfeet.
- female.
- feminine.
- Printingfolio.
- following.
- Weights and Measuresfoot.
- Currencyfranc.
F, f
(ef ),USA pronunciation n., pl. F's or Fs, f's or fs.
F,
f,
F-, [Mil.]
F.,
F1 layer (ef′ wun′).USA pronunciation
F2 layer (ef′ to̅o̅′).USA pronunciation
- the sixth letter of the English alphabet, a consonant.
- any spoken sound represented by the letter F or f, as in fat, differ, or huff.
- something having the shape of an
F. - a written or printed representation of the letter F or f.
- a device, as a printer's type, for reproducing the letter F or f.
F,
- PhysicsFahrenheit.
- Educationfemale.
- Genetics, Music and Dancefilial.
- firm.
- Currencyfranc;
francs. - French.
- the sixth in order or in a series.
- (sometimes l.c.) (in some grading systems) a grade or mark that indicates academic work of the lowest quality;
failure. - [Music.]
- the fourth tone in the scale of C major or the sixth tone in the relative minor scale, A minor.
- a string, key, or pipe tuned to this tone.
- a written or printed note representing this tone.
- (in the fixed system of solmization) the fourth tone of the scale of C major, called fa.
- the tonality having F as the tonic note.
- (sometimes l.c.) the medieval Roman numeral for 40. Cf. Roman numerals.
- [Math]
- field.
- function (of ).
- (sometimes l.c.) [Elect.]farad.
- Chemistryfluorine.
- (sometimes l.c.) [Physics.]
- force.
- frequency.
- fermi.
- Biochemistryphenylalanine.
f,
- firm.
- PhotographySee f-number.
- Music and Danceforte.
- Symbol, Optics. See focal length.
F-, [Mil.]
- Military(in designations of aircraft) fighter:F-105.
F.,
- PhysicsFahrenheit.
- February.
- Fellow.
- forint.
- franc;
francs. - France.
- French.
- Friday.
- Drugs(in prescriptions) make.
- Latin fac
- Electricityfarad.
- Currencyfarthing.
- father.
- Weights and Measuresfathom.
- Weights and Measuresfeet.
- female.
- feminine.
- Drugs(in prescriptions) let them be made.
- Latin fac
- Drugs(in prescriptions) fiat.
- filly.
- fine.
- Weights and Measuresfluid (ounce).
- Printingfolio.
- following.
- Weights and Measuresfoot.
- form.
- formed of.
- Currencyfranc.
- from.
- MathematicsMath. function (of ).
- (in the Netherlands) guilder;
guilders.
- See f-number.
F1 layer (ef′ wun′).USA pronunciation
- See under F layer.
F2 layer (ef′ to̅o̅′).USA pronunciation
- See under F layer.
'ff' also found in these entries (note: many are not synonyms or translations):