Related Clues:

• Bit to be split
• Solar-wind particle
• Abstract ending?
• Democritus' indivisible unit
• Nuclear fission target
• Very small matter
• Particle in a cloud chamber
• It may be radical
• Molecule bit
• It's tiny and sometimes attractive
• Old Saturn model
• Charged subatomic particle
• Network formerly known as PAX TV
• Minute matter
• 'Positively Entertaining' TV network