/ Dictionary / Index T thin film: Meaning and Definition of Find definitions for: thin' film' Pronunciation: [key] a film of material only a few microns thick, deposited on a substrate, as in the technology for making integrated circuits. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thine thing Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language