noun plural but singular in construction Date: 1909 a branch of dentistry dealing with irregularities of the teeth (as malocclusion) and their correction (as by means of braces), orthodontic adjective orthodontically adverb orthodontist noun
ORTHODONTICS
Meaning of ORTHODONTICS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012