Meaning of ribosome in English:


Pronunciation /ˈrʌɪbə(ʊ)səʊm/


  • A minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells. They bind messenger RNA and transfer RNA to synthesize polypeptides and proteins.

    ‘Motors, such as RNA polymerases and ribosomes, produce trailing strands of mRNA and protein, respectively.’
    • ‘Thus transcribing RNA polymerases and ribosomes may all be bound to the same RNA molecule while marching in the same direction.’
    • ‘This necessitated a mechanism for the import of the now nucleus-encoded proteins, which are synthesized at free ribosomes in the cytoplasm.’
    • ‘The smallest RNA component of almost all ribosomes is 5S ribosomal RNA.’
    • ‘Since these patterns are almost identical, it would appear that HMP associates with ribosomes or ribosomal proteins.’


1950s from ribonucleic acid+ -some.