ADP

American

[ey-dee-pee] / ˈeɪˈdiˈpi /

abbreviation

Also called adenosine diphosphoric acid. Biochemistry. adenosine diphosphate: an ester of adenosine and pyrophosphoric acid, C 10 H 12 N 5 O 3 H 3 P 2 O 7 , derived from ATP, and serving to transfer energy during glycolysis.
Computers. automatic data processing: the processing of data by computers or related devices, using techniques that reduce human intervention to a minimum.

ADP British

noun

biochem adenosine diphosphate; a nucleotide derived from ATP with the liberation of energy that is then used in the performance of muscular work

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

ADP Scientific

/ ā′dē′pē′ /

Short for adenosine diphosphate. An organic compound that is composed of adenosine and two phosphate groups. With the addition of another phosphate group, it is converted to ATP for the storage of energy during cell metabolism. It then forms again, from ATP, when a phosphate group is removed to release energy. Chemical formula: C ₁₀ H ₁₅ N ₅ O ₁₀ P ₂ .

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Example Sentences

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Richardson, who is also head of ADP Research, will talk about what’s driving employment conditions, as well as share thoughts on how artificial intelligence could shape U.S. employment in the coming years.

From Barron's • May 8, 2026

Data earlier this week from the Labor Department and human-resources firm ADP showed that the job market is firming up.

From The Wall Street Journal • May 8, 2026

Nela Richardson, chief economist at ADP, the U.S.’s largest processor of company payrolls, said medium-sized companies still show signs of weakness.

From MarketWatch • May 8, 2026

Nela Richardson, chief economist at ADP, discusses the current state of the labor market, including a look at demographic changes and small business momentum, with Barron’s Megan Leonhardt.

From Barron's • May 8, 2026

The analogy of the storage battery has been used: ATP represents the charged, ADP the discharged battery.

From "Silent Spring" by Rachel Carson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023