The American Heritage® Dictionary of the English Language, 4th Edition
n. A syndrome characterized by chronic pain in the muscles and soft tissues surrounding joints, fatigue, and tenderness at specific sites in the body. Also called fibromyalgia syndrome, fibromyositis, fibrositis.
n. Chronic pain, stiffness, and tenderness of the muscles, tendons, and joints
Word Usage
"I never used the term fibromyalgia, because the anatomy and pathology of the disease had never been described accurately and the name reflected a symptom complex, only."