: a nucleotide C10H15N5O10P2 composed of adenosine and two phosphate groups that is formed in living cells as an intermediate between ATP and AMP and that is reversibly converted to ATP for the storing of energy by the addition of a high-energy phosphate group

called also adenosine diphosphate

Examples of ADP in a Sentence

Recent Examples on the Web
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That was indeed the case in ADP’s latest monthly private-sector employment report released Wednesday. Alicia Wallace, CNN Money, 3 Sep. 2026 Home leagues are a completely different environment from a competitive league where nearly everyone understands Average Draft Position (ADP), knows the depth charts and has already done 50 drafts. Dan Zaksheske Outkick, FOXNews.com, 31 Aug. 2026 Our work with the Stanford Digital Economy Lab provides a real-time view of AI’s impact on occupations through the lens of ADP’s payroll data. Maria Black, Fortune, 31 Aug. 2026 With Allen giving fantasy football teams such an advantage over the other quarterbacks available, his ADP is very high this year, but for good reason. Steve Bradshaw, Forbes.com, 30 Aug. 2026 See All Example Sentences for ADP

Word History

Etymology

adenosine diphosphate

First Known Use

1942, in the meaning defined above

Time Traveler
The first known use of ADP was in 1942

Browse Nearby Words

Cite this Entry

“ADP.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ADP. Accessed 7 Sep. 2026.

Kids Definition

: a compound formed in living cells that reacts to form ATP

Medical Definition

: a nucleotide C10H15N5O10P2 composed of adenosine and two phosphate groups that is formed in living cells as an intermediate between ATP and AMP and that is reversibly converted to ATP for the storing of energy by the addition of a high-energy phosphate group

called also adenosine diphosphate

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