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Meaning of polyadenylic acid

pol'y•ad•e•nyl'ic ac'id

Pronunciation: (pol'ē-ad"n-il'ik, pol"-), [key]
— Biochem. Biochem.
  1. a homopolymer of adenylic acid enzymatically added to messenger RNA in eukaryotic cells to inhibit the hydrolytic breakdown of messenger RNA.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.