Definition of fine-grain in US English:

fine-grain

adjective

  • 1Consisting of very small particles. Also (of wood, leather, etc.): having a smooth, regular texture.

  • 2Photography. Designating a photographic emulsion composed of comparatively small grains, so that considerable enlargement of the photograph is possible without any graininess becoming apparent; made with such an emulsion. Also (of a developer): suitable for producing such photographs.

Origin

Late 18th century; earliest use found in William Felton (fl. c1794). From fine + grain.

Pronunciation

fine-grain

/fʌɪnˈɡreɪn/