ribosome

noun
ri·​bo·​some | \ ˈrī-bə-ˌsōm How to pronounce ribosome (audio) \

Definition of ribosome

: any of the RNA-rich cytoplasmic granules that are sites of protein synthesis — see cell illustration

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Other Words from ribosome

ribosomal \ ˌrī-​bə-​ˈsō-​məl How to pronounce ribosomal (audio) \ adjective

Examples of ribosome in a Sentence

Recent Examples on the Web But the approach doesn’t work well when proteins are exceptionally large, work in complexes such as the ribosome, or can’t be crystallized, as is the case with many proteins that sit in cell membranes. Robert F. Service, Science | AAAS, "Cryo–electron microscopy breaks the atomic resolution barrier at last," 21 Oct. 2020 Other loops force the ribosome to back up and then move forward again. Carl Zimmer New York Times, Star Tribune, "The coronavirus unveiled: Scientists are deciphering the virus' genome with ever-detailed analysis," 15 Oct. 2020 Moderna’s vaccine candidate, called mRNA-1273, relies on genetic material known as messenger RNA, which carries the recipe for making proteins to tiny ribosome chefs inside cells. Knvul Sheikh, New York Times, "Moderna Gets OK to Start Larger Trial for a Coronavirus Vaccine," 7 May 2020 Their target is the ribosome—a manufacturing plant found in all living cells, which reads the information encoded in genes and uses that to build proteins. Ed Yong, The Atlantic, "A Huge Discovery in the World of Viruses," 20 Feb. 2020 One leading hypothesis is that the second piece of RNA affects ribosomes, the structures responsible for translating RNA into chains of amino acids. Quanta Magazine, "New Clues About ‘Ambigram’ Viruses With Strange Reversible Genes," 12 Feb. 2020 This mimicked the way the protein naturally folds bit by bit as it is produced in the cell, by a protein-making organelle called a ribosome. Sarah Lewin Frasier, Scientific American, "Unboiled Egg Untangles a Knotty Protein Problem," 2 Feb. 2015 And Jason Chin, a biochemist at the Medical Research Council Laboratory of Molecular Biology in England, has created a ribosome (the cell’s protein-producing factory) that reads codons made up of four letters, not three. Quanta Magazine, "Is a Bigger Genetic Code Better? Get Ready to Find Out," 2 Jan. 2018 Using traditional forms of electron microscopy, the cell’s machinery — the ruffled interior of individual mitochondria, the black flecks of ribosomes — comes into focus. Quanta Magazine, "The Overlooked Link Between Two of This Year’s Nobel Prizes," 27 Nov. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ribosome.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ribosome

1958, in the meaning defined above

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Time Traveler for ribosome

Time Traveler

The first known use of ribosome was in 1958

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Statistics for ribosome

Last Updated

30 Oct 2020

Cite this Entry

“Ribosome.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ribosome. Accessed 4 Dec. 2020.

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More Definitions for ribosome

ribosome

noun
ri·​bo·​some | \ ˈrī-bə-ˌsōm How to pronounce ribosome (audio) \

Kids Definition of ribosome

: one of the tiny round particles in a cell where proteins are made

ribosome

noun
ri·​bo·​some | \ ˈrī-bə-ˌsōm How to pronounce ribosome (audio) \

Medical Definition of ribosome

: any of the RNA- and protein-rich cytoplasmic granules that are sites of protein synthesis

Other Words from ribosome

ribosomal \ ˌrī-​bə-​ˈsō-​məl How to pronounce ribosomal (audio) \ adjective

More from Merriam-Webster on ribosome

Britannica.com: Encyclopedia article about ribosome

Comments on ribosome

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