单词 | tooth-sac |
释义 | > as lemmastooth-sac tooth-sac n. a sac or hollow structure of connective tissue, within which a tooth is developed. ΘΚΠ the world > life > the body > digestive or excretive organs > digestive organs > mouth > substance or parts of teeth > [noun] > socket socket1601 alveolus1657 tooth-sac1890 1890 J. S. Billings National Med. Dict. II Tooth-sac, connective-tissue structure enclosing the dentine germ and enamel-organ in the fœtal development of the teeth. < as lemmas |
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