Data processing by a computer

• Payroll service co
• Check-processing company, initially
• Big name in payroll
• Big check-printing co.
• Payroll services company
• Payroll service initials
• Big payroll service co.
• Big inits. in check processing

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

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