polyadenylic acid: Meaning and Definition of

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.