ADP

noun

ˌā-(ˌ)dē-ˈpē 

: 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

Treasury markets are taking a breather after yields moved higher on Wednesday as new ADP data showed private payrolls rose by 122,000 in May, the strongest month since January 2025. —Sean Conlon,hugh Leask, CNBC, 4 June 2026

That mismatch extends beyond AI, ADP’s Richardson said, noting shortages in specialty trades where retirements far outpace the inflow of new workers. —Alicia Wallace, CNN Money, 4 June 2026

Tools such as the ADP Salary Paycheck Calculator can help graduates estimate their take-home pay after taxes and common payroll deductions. —Vanessa Duplessie, Forbes.com, 31 May 2026

There is no recognizable platform like Workday or ADP. —Kurt Knutsson, FOXNews.com, 31 May 2026

Word History

Etymology

adenosine diphosphate

First Known Use

1942, in the meaning defined above

Kids Definition

ADP

noun

ˌā-ˌdē-ˈpē 

ā-ˈdē-ˌpē

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

Medical Definition

ADP

noun

ˌā-ˌdē-ˈpē  ā-ˈdē-ˌpē 

: 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