筋きん腫しゅきんしゅFreq.FrequencyTop 100,000Meanings1nounmyoma; muscle tumormedicineMedical term for a benign tumor arising from muscle tissue. Often used in compounds like 子宮筋腫 (uterine fibroid).子し宮きゅう筋きん腫しゅは、子し宮きゅうの筋きん肉にくにできる良りょう性せいの腫しゅ瘍ようです。Uterine fibroids are benign tumors that develop in the muscle of the uterus.