periodontium / ˌpɛr i əˈdɒn ʃəm, -ʃi əm /

📖毕业后词汇牙周牙周部骨膜骨盆

periodontium 的定义

n. 名词 noun

plural per·i·o·don·tia [per-ee-uh-don-shuh, -shee-uh]. /ˌpɛr i əˈdɒn ʃə, -ʃi ə/.

  1. the bone, connective tissue, and gum surrounding and supporting a tooth.