: 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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This week, payrolls processing firm ADP said private companies added just 22,000 positions in January, far weaker than forecast. Sarah Min, CNBC, 6 Feb. 2026 On Wednesday, payroll processor ADP reported that private employers added just 22,000 jobs last month, far fewer than forecasters had expected. Boston Herald Wire Services, Boston Herald, 5 Feb. 2026 Another jobs report from ADP Research released Wednesday estimated that the private sector added just 22,000 jobs in January, driven primarily by an additional 74,000 roles in education and health services. Hannah Parker, NBC news, 5 Feb. 2026 Job growth wasn’t as bleak as the initial ADP figures suggested, NerdWallet’s Renter said, adding that the latest report provides further confirmation of the slowdown seen in the labor market during the past year. Alicia Wallace, CNN Money, 4 Feb. 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

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Cite this Entry

“ADP.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ADP. Accessed 15 Feb. 2026.

Kids Definition

ADP

noun
ˌā-ˌdē-ˈpē How to pronounce ADP (audio)
ā-ˈdē-ˌpē
: 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

Last Updated: - Updated example sentences
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