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
Also known as Martin Bell Syndrome or FXS A genetic disorder which makes the X chromosome enlarged therefore fragile. People with FXS are often autistic but not all of the people with fxs are autistic. Fragile X often causes intellectual disability. They have a distinct appearance These features include a long and narrow face , large ears, a prominent jaw and forehead, unusually flexible fingers, flat feet , and in males, enlarged testicles (macroorchidism) after puberty.
Text fits
Save
Cancel