ortho·don·ticsBrE/ˌɔːθəˈdɒntɪks/NAmE/ˌɔːrθəˈdɑːntɪks/noun[U]thetreatmentofproblemsconcerningthepositionoftheteethandjaws口腔正畸术Uncountable nouns ending in –icsathletics,ballistics,civics,cybernetics,genetics,geophysics,gymnastics,linguistics,optics,orthodontics,orthopaedics,phonetics,phonics,physics,semantics,semiotics,stylistics,thermodynamics▸ortho·don·ticBrE/ˌɔːθəˈdɒntɪk/NAmE/ˌɔːrθəˈdɑːntɪk/adjective◆orthodontictreatment口腔正畸治疗