petascale (not comparable)
- A metric for objects on the scale of quadrillions (1015 or 1,000,000,000,000,000) of elements. Most often used for computer systems; a petascale computer system operates at speeds measured in petaflops and has memory measured in petabytes.
- Scalable System Software for Petascale Computer Systems
- U.S. Department of Energy Office of Science Genomics glossary