Definition of polysome in English:

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Pronunciation: /ˈpälēˌsōm/


A cluster of ribosomes held together by a strand of messenger RNA that each ribosome is translating.
Example sentences
  • This value was lower than the average amount of mRNA detected in all polysomes (two ribosomes per mRNA) in leaves of arabidopsis and rapidly dividing yeast cells.
  • The peaks of free 40S and 60S subunits, 80S ribosomes (free couples and monosomes), and polysomes are indicated.
  • Anoxia causes polysomes, translating the aerobic proteins, to dissociate, and anaerobic mRNAs are translated from polysomes with a much lower average size.

For editors and proofreaders

Syllabification: pol·y·some

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