orthodontics
noun /ˌɔːθəˈdɒntɪks/
/ˌɔːrθəˈdɑːntɪks/
[uncountable]- the treatment of problems relating to the position of the teeth and jaws
口腔正畸术 More Like This Uncountable nouns ending in –icsUncountable nouns ending in –ics- athletics
- ballistics
- civics
- cybernetics
- genetics
- geophysics
- gymnastics
- linguistics
- optics
- orthodontics
- orthopaedics
- phonetics
- phonics
- physics
- semantics
- semiotics
- stylistics
- thermodynamics
词源early 20th cent.: from ortho- ‘straight’ + Greek odous, odont- ‘tooth’.