title: Grain (disambiguation)
text: # Grain (disambiguation)
  
  Grains are the seeds of arable crops or the crops bearing them.
  
  Grain or grains may also refer to:
  
  ## Material structures
  
  * Grain (textile), the orientation of a woven textile used in a garment
  * Grain, a solid-fuel rocket's propellant charge; roughly a hollow cylinder, sometimes textured, and possibly very large
  * Crystallite or "grain" in metallurgy, a single crystal inside solid-state matter
  * Film grain, the gritty texture sometimes apparent on images produced using photographic film or paper (grainy)
  * Grain size (or particle size), for particles of rock in geology
  * Wood grain, the alignment and texture of the fibres in wood
  
  ## Places
  
  * Isle of Grain in Kent, England
     * Grain Power Station, a power station on the Isle of Grain
  * Grain Valley, Missouri, a city in the US
  
  ## Arts, entertainment, and media
  
  * Grain (film), 2015 European film by Semih Kaplanoğlu
  * Grain (magazine), a Canadian literary magazine
  * "The Grain", an 1886 short story by Leo Tolstoy
  
  ## Other uses
  
  * Grain (unit), a unit of mass equal to 64.79891 milligrams, 1⁄7,000 of an avoirdupois pound
     * Grains per gallon, a unit of water hardness
  * Grain (cipher), a stream cipher designed for restricted hardware environments
     * Grain 128a, successor of Grain cipher
  * Grain (surfboard company), a company that manufactures hollow wooden surfboards
  * Grain (company), a Series B Singaporean food-delivery startup
  * GRAIN, an international non-governmental organization for sustainable agriculture
  * Grain of salt, an idiom
  