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from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Passing or occurring across a membrane.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. traversing a cellular membrane
  • adj. of or pertaining to a transmembrane protein or segment
  • n. a transmembrane protein, or the transmembrane portion of a protein


trans- + membrane (Wiktionary)



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