Big inits. in check processing

• Big name in payroll
• Payroll service giant, initially
• Check-processing company, initially
• An ester of adenosine that is converted to ATP for energy storage
• Payroll service co
• Data processing by a computer
• Payroll services company

Wiktionary Word definitions in Wiktionary
n. (initialism of adenosine diphosphate English)

Wikipedia Word definitions in Wikipedia
Adp or ADP may refer to: