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Definition of "membrane" []

  • Biology A thin, pliable layer of tissue covering surfaces or separating or connecting regions, structures, or organs of an animal or a plant. (noun)
  • Biology Cell membrane. (noun)
  • A piece of parchment. (noun)
  • Chemistry A thin sheet of natural or synthetic material that is permeable to substances in solution. (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.

Use "membrane" in a sentence
  • "He searching the darkness with his eyes, reaching tentatively towards a mirror that no longer showed a reflection he recognized, and she pressed against the membrane from the other side, frozen in place."
  • "I loathe the feel of it as I peel the membrane from the inside."
  • "Oyster beds are dead and dying with the offspring unable to survive due to changes in membrane viscosity caused by the dispersant."