Related Clues:

• Small particle
• 'Charmed' particle
• Quarky item?
• Powerful particle
• Fermi's bit
• -- smasher (accelerator)
• Molecular component
• Power source
• Smasher bit
• Lab particle
• Teensy particle
• It's a small thing
• Democritus' unit
• Molecule piece
• Chemist's concern