pellicle

A thin skin or film, such as an organic membrane or liquid film.

In entomology, the skin of the subimago of an ephemerid.

A little or thin skin; a cuticle; a film; a scum: as, the nacreous pellicle of some shells; the coaly pellicle of many fossil plants; the filmy pellicle or scum of infusions in which infusorial animalcules or microscopic fungi develop.

In chem., a thin crust formed on the surface of saline solutions when evaporated to a certain degree. This pellicle consists of crystallized saline particles.

In botany, same as cortical layer (Which see, under cortical)

A thin skin or film.

A thin film formed on the surface of an evaporating solution.

A thin skin or film.

Cuticle, the hard protective outer layer of certain life forms.

The skin of a mushroom cap.