乳にゅう腺せん炎えんにゅうせんえんMeanings1nounmastitismedicineMedical term for inflammation of the breast tissue, often associated with breastfeeding.授じゅ乳にゅう中ちゅうの母はは親おやは乳にゅう腺せん炎えんに注ちゅう意いが必ひつ要ようです。Breastfeeding mothers need to be careful about mastitis.