Origin: Greek suffix -itis
Osteoarthritis has 2 different meanings across 1 category:
chronic breakdown of cartilage in the joints; the most common form of arthritis occurring usually after middle age
"My doctor confirmed that my morning stiffness and pain were caused by osteoarthritis, a condition where the cartilage in my knees had worn down over several decades."
A form of arthritis, affecting mainly older people, caused by chronic degeneration of the cartilage and synovial membrane of the joints, leading to pain and stiffness.
"After years of running marathons, my knees now ache constantly from osteoarthritis as the protective cartilage wears down with age."