- Word Combinations (noun), Word History, Word Explorer, Word Parts
|part of speech:
||(used with a sing. verb) the branch of dentistry that deals with the correct alignment and position of teeth; orthodontia.
||orthodontic (adj.), orthodontist (n.)
The word orthodontics
was coined in 1909. It was formed from orthos
, two ancient Greek words that mean "straight" and "tooth."