Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

poly(A)

play
noun \ˌpä-lē-ˈā\

Definition of poly(A)

  1. :  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



Origin and Etymology of poly(a)

poly- + adenylic acid


First Known Use: 1957


Medical Dictionary

poly(A)

play
noun \ˈpäl-ē-ˈā\

Medical Definition of poly(A)

  1. :  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




Seen and Heard

What made you want to look up poly(A)? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

of or relating to the heavens

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

dog-eating-apple

Which is a synonym of asperse?

divulge defame placate beat
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ