Related Clues:

• Cool, once
• Fraction of a joule
• A little work
• Radiation unit
• Centimeter-gram-second unit
• Dosage unit at a reactor
• Dosage unit
• Part of a joule
• X-ray spec
• Bit of energy
• Unit of work
• Awesome
• 'Totally cool!'
• Tiny fraction of a joule
• Bit of a joule