F 1The symbol for fluorine.F 2abbr.1. Sports faceoff2. Fahrenheit3. a. failb. failure4. farad5. fax machine number6. female7. Genetics filial generation8. Sports forward9. Sports foul10. franc11. Friday12. Football fumblef 1 or F (?f)n. pl. f’s or F’s also fs or Fs 1. The sixth letter of the modern English alphabet.2. Any of the speech sounds represented by the letter f.3. The sixth in a series.4. Something shaped like the letter F.5. F A grade that indicates failing status.6. Music a. The fourth tone in the scale of C major or the sixth tone in the relative minor scale.b. A key or scale in which F is the tonic.c. A written or printed note representing this tone.d. A string, key, or pipe tuned to the pitch of this tone.f 2abbr.1. Grammar feminine2. focal length3. forte4. functionAmerican Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.f (?f) or Fn, pl f’s, F’s or Fs1. (Linguistics) the sixth letter and fourth consonant of the modern English alphabet2. (Phonetics & Phonology) a speech sound represented by this letter, usually a voiceless labio-dental fricative, as in fatf symbol for 1. (Classical Music) music forte: an instruction to play loudly 2. (General Physics) physics frequency 3. (Currencies) (formerly in the Netherlands) guilder 4. (Mathematics) maths function (of) 5. (General Physics) physics femto- 6. (Chess & Draughts) chess See algebraic notation [(sense 3) from Dutch: florin]f , f/ or f:symbol for (Photography) f-numberF symbol for 1. (Classical Music) music a. a note having a frequency of 349.23 hertz (F above middle C) or this value multiplied or divided by any power of 2; the fourth note of the scale of C majorb. a key, string, or pipe producing this notec. the major or minor key having this note as its tonic 2. (General Physics) Fahrenheit 3. Fellow 4. (Chemistry) chem fluorine 5. (General Physics) Helmholtz function 6. (General Physics) physics force 7. (Currencies) franc(s) 8. (General Physics) farad(s) 9. genetics a generation of filial offspring, F1 being the first generation of offspring, F2 being the second generation, etc abbreviation for (Automotive Engineering) France (international car registration) Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014F, f (?f) n., pl. Fs F’s, fs f’s. 1. the sixth letter of the English alphabet, a consonant. 2. any spoken sound represented by this letter. 3. something shaped like an F. 4. a written or printed representation of the letter F or f. F 1. female. 2. Genetics. filial. 3. firm. 4. franc. 5. French. F Symbol. 1. the sixth in order or in a series. 2. (sometimes l.c.) (in some grading systems) a grade or mark that indicates academic work of the lowest quality; failure. 3. a. the fourth note of the ascending C major scale. b. a tonality having F as the tonic. 4. Math. a. field. b. function (of). 5. Fahrenheit. 6. farad. 7. fluorine. 8. (sometimes l.c.) Physics. a. force. b. frequency. c. fermi. 9. phenylalanine. f 1. firm. 2. Music. forte. f Symbol. 1. focal length. 2. fluid dram. 3. Math. function (of). F. 1. Fahrenheit. 2. February. 3. Fellow. 4. forint. 5. franc. 6. France. 7. French. 8. Friday. f. 1. farad. 2. farthing. 3. father. 4. fathom. 5. feet. 6. female. 7. feminine. 8. filly. 9. fine. 10. folio. 11. following. 12. foot. 13. form. 14. formed of. 15. franc. 16. from. f/ Symbol. f-number. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.F1. The symbol for fluorine. 2. Abbreviation of FahrenheitThe American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.