from 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Chronic pain, stiffness, and tenderness of the muscles, tendons, and joints
fibro- + myalgia (Wiktionary)