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

---

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 .

---

Compare meaning

How does adp compare to similar and commonly confused words? Explore the most common comparisons:

• ATP vs. ADP

Example Sentences

Aena shares are actually up 3% in the last month, with Fraport down 1% and ADP losing 3%.

From Barron's • 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

Human-resources firm ADP said this week that it saw solid March job gains in the private sector.

From The Wall Street Journal • Apr. 3, 2026

The data were released alongside a separate report showing that private payrolls grew by 62,000 in March, according to ADP, well above the consensus forecast of 40,000.

From Barron's • Apr. 1, 2026

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

From "Silent Spring" by Rachel Carson