pellicle

A thin skin or film.

A cuticle, the hard protective outer layer of certain life forms.

Biology, Mycology, Natural sciences The outermost layer of a mushroom; the skin of a mushroom cap; especially, a surface that is viscid and easily peels off.

Biology, Cytology, Medicine, Natural sciences, Sciences A thin layer supporting the cell membrane in various protozoa.

Biology, Natural sciences The growth on the surface of a liquid culture.

Cooking, Food, Lifestyle A skin or coating of proteins on the surface of meat to be smoked, improving the surface adhesion.

Dentistry, Medicine, Sciences A coating of glycoproteins from saliva that forms on teeth; it offers some protection to the enamel from bacterial acidity.

Arts, Hobbies, Lifestyle, Photography The photosensitive emulsion of photographic film.

Engineering, Natural sciences, Optics, Physical sciences, Physics A thin plastic membrane used as a beam splitter or protective cover (for example, to protect a photomask).