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ADP

American  
[ey-dee-pee] / ˈeɪˈdiˈpi /

abbreviation

  1. 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.

  2. 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

  1. 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′ /

  1. 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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Meanwhile, only 2 in 10 workers feel confident their job is safe from elimination, according to ADP research released late last month.

From MarketWatch • Apr. 3, 2026

There’s a disconnect between low unemployment rates and worker sentiment, said Nela Richardson, chief economist at ADP.

From MarketWatch • Apr. 3, 2026

Private-sector job creation was steady in March, payroll processor ADP reported on Wednesday.

From The Wall Street Journal • Apr. 1, 2026

Looking at the details in Wednesday’s ADP data, small businesses with less than 50 employees added a whopping 85,000 jobs to payrolls last month, with micro businesses really leading the way.

From Barron's • Apr. 1, 2026

The charging of the battery, in which ADP and a free phosphate group are combined to restore ATP, is coupled to the oxidative process; the close linking is known as coupled phosphorylation.

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.