筋きん炎えんきんえんMeanings1nounmyositismedicineMedical term for inflammation of muscle tissue. Used in clinical contexts.筋きん炎えんの症しょう状じょうには筋きん力りょく低てい下かや筋きん肉にく痛つうがあります。Symptoms of myositis include muscle weakness and muscle pain.