Editing Grain (disambiguation) (section)

==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