: RNA or a segment of RNA that is composed of a polynucleotide chain consisting entirely of adenylic acid residues and that codes for polylysine when functioning as messenger RNA in protein synthesis
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“Poly(A).” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/poly%28A%29. Accessed 3 Nov. 2025.
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poly(A)
noun
: RNA or a segment of RNA that is composed of a polynucleotide chain consisting entirely of adenine-containing nucleotides and that codes for polylysine when functioning as messenger RNA in protein synthesis
called also polyadenylate, polyadenylic acid
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