Pellicle
Pronunciation : Pel"li*cle
Part of Speech : n.
Etymology : [L. pellicu, dim. of pellis skin: cf. F. pellicule.]
Definition : 1. A thin skin or film.
2. (Chem.)
Defn: A thin film formed on the surface of an evaporating solution.
Source : Webster's Unabridged Dictionary, 1913