The meaning of the Acronym PES is...

PES is

• Photo-Electron Spectroscopy

More Meanings For PES:

• Program Editor work space file (WordPerfect Library)
• Programmable Electronic System
• Packetized Elementary Stream
• Process Engineering Suite
• Proposed Encryption Standard
• Personal Email Solution
• Photo-Electron Spectroscopy
• Pissy Ending Syndrome
• PEZ Enjoyment Sensor
• Polyethersulfone
• Power Engineering Society
• Paly E Something
• Publicly Examined Subject
• Professional Evolution Soccer
• Public Electricity Supplier

PES is also in:

• Adults
• Electronics
• File Extensions
• Funnies
• General
• Networking
• Plastics
• Security
• Software
• Unfiled