RNA
noun
: any of various nucleic acids that contain ribose and uracil as structural components and are associated with the control of cellular chemical activities compare messenger rna, ribosomal rna, transfer rna
Examples of RNA in a Sentence
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Thioesters and early chemistry Earlier efforts to attach amino acids to RNA had relied on highly reactive compounds that quickly degraded in water and caused amino acids to clump together rather than bind to RNA.
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Neetika Walter, Interesting Engineering, 29 Aug. 2025
Mirvie developed a diagnostic test that uses RNA technology to predict and prevent preeclampsia, a condition that affects about 1 in 12 pregnancies and can lead to seizures, organ failure, or even death.
—Geri Stengel, Forbes.com, 27 Aug. 2025
This non-greasy serum also uses exosomes (small vesicles packed with protein, lipids, and plant RNA) to encourage cellular renewal at the scalp and defend against stress.
—Conçetta Ciarlo, Vogue, 26 Aug. 2025
The enzyme is a key component in producing purine, a building block of DNA and RNA.
—Mindy Weisberger, CNN Money, 22 Aug. 2025
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Neetika Walter, Interesting Engineering, 29 Aug. 2025
Mirvie developed a diagnostic test that uses RNA technology to predict and prevent preeclampsia, a condition that affects about 1 in 12 pregnancies and can lead to seizures, organ failure, or even death.
—Geri Stengel, Forbes.com, 27 Aug. 2025
This non-greasy serum also uses exosomes (small vesicles packed with protein, lipids, and plant RNA) to encourage cellular renewal at the scalp and defend against stress.
—Conçetta Ciarlo, Vogue, 26 Aug. 2025
The enzyme is a key component in producing purine, a building block of DNA and RNA.
—Mindy Weisberger, CNN Money, 22 Aug. 2025
See All Example Sentences for RNA
Cite this Entry
“RNA.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/RNA. Accessed 9 Sep. 2025.
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RNA
noun
: any of various nucleic acids that are typically found in the cytoplasm of cells, are usually composed of a single chain of nucleotides, differ from DNA in containing ribose as the five-carbon sugar instead of deoxyribose, and that function mostly in protein synthesis
called also ribonucleic acid
compare messenger rna, ribosomal rna, transfer rnaMedical Definition
RNA
noun
: any of various nucleic acids that contain ribose and uracil as structural components and are associated with the control of cellular chemical activities
called also ribonucleic acid
see messenger rna, ribosomal rna, transfer rnaLove words? Need even more definitions?
Merriam-Webster unabridged
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