Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
Term; Used to describe a person, usually a female, as being likely to put on weight or get fat as she ages or when she gets older in age. Term was developed as a metaphor relating to the energy 'expansion' that is created when a uranium atom is split which figuratively describes the 'expansion' of a woman's figure.
Text fits
Save
Cancel