Big inits. in check processing

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

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