poly(A)

noun
\ ˌpä-lē-ˈā How to pronounce poly(A) (audio) \

Definition of poly(A)

: 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

First Known Use of poly(A)

1957, in the meaning defined above

History and Etymology for poly(A)

poly- + adenylic acid

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The first known use of poly(A) was in 1957

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Cite this Entry

“Poly(A).” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/poly%28A%29. Accessed 24 January 2020.

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More Definitions for poly(A)

poly(A)

noun
\ ˈpäl-ē-ˈā How to pronounce poly(A) (audio) \

Medical Definition of poly(A)

: 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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