orthodontics /,ɔ:θәu'dɔntiks/ GRE英语词汇 📖 中文释义 [医] 正牙学 🧩 词形变化 原形 orthodontic 📘 English Definition(英文释义) n. the branch of dentistry dealing with the prevention or correction of irregularities of the teeth ← orthodontic treatment O 字母词表 orthodontist →