ri·​bo·​some | \ ˈrī-bə-ˌsōm \

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 \ adjective

Examples of ribosome in a Sentence

Recent Examples on the Web

For the thread, Diane chose Namjoon as the nucleus; Jin as the endoplasmic recticulum; Yoongi as the cell membrane; Hoseok as the mitochondria; Jimin as the Golgi body; Taehyung as the lysosome; and Jungkook for the ribosome. Lauren Rearick, Teen Vogue, "A BTS Fan Went Viral After Comparing Members of the Group to an Animal Cell," 23 Nov. 2018 The most recent winner before Dr. Arnold was Ada E. Yonath, who shared the prize with two other scientists in 2009 for her work on the structure and function of ribosomes, the tiny structures inside cells that manufacture proteins. Joanna Sugden, WSJ, "Nobel Chemistry Prize Is Awarded to Three Evolutionary Scientists," 3 Oct. 2018 When food is restricted, or a metabolic pathway is silenced or slowed down, nucleoli shrink, making fewer ribosomes, and cells live longer. Joanna Klein, New York Times, "The Thing Inside Your Cells That Might Determine How Long You Live," 20 May 2018 But there’s more to the nucleolus than just making ribosomes. Joanna Klein, New York Times, "The Thing Inside Your Cells That Might Determine How Long You Live," 20 May 2018 Remarkably, all the protein in all organisms is made by the catalytic activity of the RNA component of the ribosome, the cellular machine that reads genetic information and makes protein molecules. Jack Szostak, Scientific American, "How Did Life Begin?," 8 May 2018 To find out more about that role, ribosome profiling was developed in 2009. Diana Gitig, Ars Technica, "A gene that keeps track of how often it’s made into a protein," 14 Jan. 2018 Baserga, of New Haven, is a pioneer in molecular biology researching the formation of ribosomes and their relationship with certain diseases and cancers. Rebecca Lurye, courant.com, "Meet The 13 Women Honored By Connecticut's Tech Community," 30 Mar. 2018 In life, messenger RNA carries the plans of proteins from genes in a cell’s chromosomes to tiny factories, called ribosomes, where those proteins are then made. The Economist, "Forensic scienceA new method to find the time of death shows promise," 27 Feb. 2018

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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Dictionary Entries near ribosome



ribosomal RNA




rib roast

Statistics for ribosome

Last Updated

2 Dec 2018

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Time Traveler for ribosome

The first known use of ribosome was in 1958

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More Definitions for ribosome


ri·​bo·​some | \ ˈrī-bə-ˌsōm \

Kids Definition of ribosome

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


ri·​bo·​some | \ ˈrī-bə-ˌsōm \

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 \ adjective

More from Merriam-Webster on ribosome

Rhyming Dictionary: Words that rhyme with ribosome

Britannica.com: Encyclopedia article about ribosome

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someone who never drinks alcohol

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