1. Of or relating to the stratosphere 
2. At a very high level, with great success
   "his career went stratospheric"

Encyclopedia: Stratospheric

• pyrargyrite
• Pyrausta
• Pyrausta nubilalis
• pyre
• pyrectic
• pyrene
• Pyrenean
• Pyrenees
• Pyrenees daisy
• Pyrenomycetes
• pyrethrin
• pyrethrum
• pyretic
• Pyrex
• pyrexia
• pyrheliometer
• pyridine
• Pyridium
• pyridoxal
• pyridoxamine
• pyridoxine
• pyriform
• pyriform area
• pyriform lobe
• pyrilamine