Related Clues:

• Charged item
• Tiny particle
• It's not free of charge
• It's charged
• Sophocles subject
• It's charged in physics
• See 15-Across
• Charged atom
• Elementary particle
• Atomic particle
• Physicist's study
• 'Am ___ time?'
• + or - item
• Cherubini opera
• Negatively charged particle