Letter R

Radius

In anatomy, the radius is the smaller of the two bones on the thumb side of the forearm.

(The bigger one is the ulna).

The word 'radius' comes unchanged from the Latin meaning a spoke in a wheel which this bone was thought to resemble.

The word 'radiation' is derived from the same Latin word -- 'radius.'

Medical disclaimer

The information on this page is for educational and informational purposes only and does not constitute medical advice in any way.

It does not replace the advice of a physician, pharmacist or other healthcare professional.
It does not represent a prescription of drugs, diagnostic exams or therapies.
In case of symptoms, doubts or concerns about your health, always consult a qualified physician.

In case of emergency call 911 (US) or 112 (EU).