Related Clues:

• 'Wild!' to a dude
• Physics unit
• 'Awesome!'
• Cool, once
• Groovy
• Radiation unit
• 'Outta sight!'
• Just ducky
• Swell
• Dosage unit at a reactor
• Dosage unit
• 'Peachy'
• 'That's amazing!'
• X-ray spec
• 'Keen!'