mononucleotide
noun
mono·nu·cle·o·tide
ˌmä-nə-ˈnü-klē-ə-ˌtīd 
-ˈnyü-
: a nucleotide that is derived from one molecule each of a nitrogenous base, a sugar, and a phosphoric acid
Examples of mononucleotide in a Sentence
Recent Examples on the Web
One small study measured the effects of supplementing with nicotinamide mononucleotide (NMN)— a precursor to NAD+ daily for 12 weeks.
—
Lauren O'Connor, Health, 7 May 2025
Sinclair also takes 1 gram of NMN, or nicotinamide mononucleotide, which in the body turns into NAD+, or nicotinamide adenine dinucleotide.
—Sandee Lamotte, CNN, 2 June 2022
Two forms of vitamin B3 — nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN) — are receiving attention for their purported effectiveness at increasing NAD levels.
—Washington Post, 26 Nov. 2019
On another front, a small human study recently tested the effects of NMN (nicotinamide mononucleotide), a chemical that in a 2013 Harvard study revitalized mitochondria — the power plants inside cells — in aging mice.
—San Diego Union-Tribune, 10 July 2019
In elderly mice, the team showed that administering a compound called nicotinamide mononucleotide, or NMN, improved blood flow, increased endurance and reversed signs of aging.
—Melissa Healy, latimes.com, 10 July 2018
One of the most promising is NMN (nicotinamide mononucleotide), a form of vitamin B3 found in fruits and vegetables like avocado and broccoli.
—Anne-Marie Guarnieri, Harper's BAZAAR, 27 Oct. 2017
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Lauren O'Connor, Health, 7 May 2025
Sinclair also takes 1 gram of NMN, or nicotinamide mononucleotide, which in the body turns into NAD+, or nicotinamide adenine dinucleotide.
—Sandee Lamotte, CNN, 2 June 2022
Two forms of vitamin B3 — nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN) — are receiving attention for their purported effectiveness at increasing NAD levels.
—Washington Post, 26 Nov. 2019
On another front, a small human study recently tested the effects of NMN (nicotinamide mononucleotide), a chemical that in a 2013 Harvard study revitalized mitochondria — the power plants inside cells — in aging mice.
—San Diego Union-Tribune, 10 July 2019
In elderly mice, the team showed that administering a compound called nicotinamide mononucleotide, or NMN, improved blood flow, increased endurance and reversed signs of aging.
—Melissa Healy, latimes.com, 10 July 2018
One of the most promising is NMN (nicotinamide mononucleotide), a form of vitamin B3 found in fruits and vegetables like avocado and broccoli.
—Anne-Marie Guarnieri, Harper's BAZAAR, 27 Oct. 2017
Cite this Entry
“Mononucleotide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mononucleotide. Accessed 15 Jul. 2025.
Copy CitationMedical Definition
mononucleotide
noun
mono·nu·cle·o·tide
-ˈn(y)ü-klē-ə-ˌtīd
: a nucleotide that is derived from one molecule each of a nitrogenous base, a sugar, and a phosphoric acid
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