filmy

1. a thin layer or coating.

2. a thin sheet of material (e.g., gelatin, cellulose acetate) specially treated for use in photography or radiography; used also to designate the sheet after exposure to the energy to which it is sensitive.

bite-wing film an x-ray film with a protruding tab to be held between the upper and lower teeth, used for a bite-wing radiograph of oral structures.

gelatin film, absorbable a sterile, nonantigenic, absorbable, water-insoluble coating used as an aid in surgical closure and repair of defects in the dura mater and pleura and as a local hemostatic.

spot film a radiograph of a small anatomic area obtained either by rapid exposure during fluoroscopy to provide a permanent record of a transiently observed abnormality, or by limitation of radiation passing through the area to improve definition and detail of the image produced. See also spot-film radiography.

x-ray film film sensitized to x-rays, either before or after exposure.