Big name in payroll

• Big check-printing co.
• Nucleotide involved in photosynthesis
• Payroll service giant, initially
• Check-processing company, initially
• Big inits. in check processing
• Payroll services company
• Big payroll service co.

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

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