• synonyms

F, f

noun, plural F's or Fs, f's or fs.
  1. the sixth letter of the English alphabet, a consonant.
  2. any spoken sound represented by the letter F or f, as in fat, differ, or huff.
  3. something having the shape of an F.
  4. a written or printed representation of the letter F or f.
  5. a device, as a printer's type, for reproducing the letter F or f.
Show More


  1. foot-second.
Show More
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for fs


Examples from the Web for fs

Contemporary Examples of fs

Historical Examples of fs

British Dictionary definitions for fs


abbreviation for
  1. foot-second
Show More
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

fs in Science


  1. Abbreviation of Fahrenheit
  2. The symbol for farad.
  3. The symbol for fluorine.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.