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A thin skin or membrane.
(noun)
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A thin, opaque, abnormal coating on the cornea of the eye.
(noun)
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A thin covering or coating: a film of dust on the piano.
(noun)
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A thin, flexible, transparent sheet, as of plastic, used in wrapping or packaging.
(noun)
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A thin sheet or strip of flexible material, such as a cellulose derivative or a thermoplastic resin, coated with a photosensitive emulsion and used to make photographic negatives or transparencies.
(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.