Definition of しそうのうろう
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(n) periodontitis; pyorrhea; pyorrhoea; pyorrhea alveolaris; inflammation of the gingiva (gums) resulting in bone loss
最近いった歯医者で「歯槽膿漏がありますね」と言われ悩んでいます。
I'm worried because the dentist I went to recently told me, "You've got periodontitis alright".