Related Clues:

• Elemental building block
• Mighty bit
• Where electrons orbit
• Electron's locale
• Building block of matter
• Bit that may be split
• Molecule maker
• Fissionable unit
• Something smashable
• Basic unit
• Director Egoyan
• Physicist's bit
• Speck of dust, e.g.
• Minute particle
• It's a little matter