petaflop Share definition Flag Petaflop: Unit of measure for utility computing, or Quadrillion operations on the machine cycle. The client purchased 50 Petaflops of processing power to render frames for their Independent Anime film. petaflop by Erik Weaver June 29, 2005 0 0 Get merch Get the petaflop mug. Buy Now — $32.95 See more merch