Home/periodontologyperiodontology/per-ee-oh-don-tol-uh-jee/US // ˌpɛr i oʊ dɒnˈtɒl ə dʒi //牙周病学,牙周学,牙周科,牙周病Definitionsn.名词 noun1: periodontics. Level 5Browse all words →