ribosome
noun
ri·bo·some
ˈrī-bə-ˌsōm 
: any of the RNA-rich cytoplasmic granules that are sites of protein synthesis see cell illustration
Examples of ribosome in a Sentence
Recent Examples on the Web
In one case, while redesigning a ribosomal protein called RpsJ, the AI remodeled an alpha helix—a structural element bridging different parts of the ribosome—and introduced eight new nearby mutations to compensate for the substitution of just two isoleucines.
—
Jacek Krywko, Scientific American, 30 Apr. 2026
To do that, the researchers decided to remove isoleucine from all of the proteins in the small subunit of the ribosome.
—ArsTechnica, 30 Apr. 2026
Further experiments suggested that cells can use ribosomes — one of the most abundant molecules in a cell — and the genetic pathways that regulate them, to control their molecular crowds.
—Quanta Magazine, 18 Feb. 2026
Then there's ribosomal RNA (rRNA) that creates ribosomes vital for producing proteins, and finally transfer RNA (tRNA) that does the actual synthesizing of the proteins from mRNA.
—Keith Cooper, Space.com, 5 Jan. 2026
See All Example Sentences for ribosome
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Jacek Krywko, Scientific American, 30 Apr. 2026
To do that, the researchers decided to remove isoleucine from all of the proteins in the small subunit of the ribosome.
—ArsTechnica, 30 Apr. 2026
Further experiments suggested that cells can use ribosomes — one of the most abundant molecules in a cell — and the genetic pathways that regulate them, to control their molecular crowds.
—Quanta Magazine, 18 Feb. 2026
Then there's ribosomal RNA (rRNA) that creates ribosomes vital for producing proteins, and finally transfer RNA (tRNA) that does the actual synthesizing of the proteins from mRNA.
—Keith Cooper, Space.com, 5 Jan. 2026
See All Example Sentences for ribosome
Cite this Entry
“Ribosome.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ribosome. Accessed 7 May. 2026.
Copy CitationKids Definition
ribosome
noun
ri·bo·some
ˈrī-bə-ˌsōm
: one of numerous small RNA-containing particles in a cell that are sites of protein synthesis
Medical Definition
ribosome
noun
ri·bo·some
ˈrī-bə-ˌsōm
: any of the RNA- and protein-rich cytoplasmic granules that are sites of protein synthesis
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