After completing dental school, a student who wishes to become an orthodontist must enter an orthodontic specialty program. This training requires a minimum of two years to complete, and in some cases may take longer.
A tablet is a wireless, portable personal computer with a touchscreen interface. The tablet form factor is typically smaller than a notebook computer, but larger than a smartphone.
pill noun [ C ] (MEDICINE) B1 a small solid piece of medicine that a person swallows without chewing (= crushing with the teeth): a sleeping pill. a vitamin pill. My mother takes three or four pills a day. Jamie's always had trouble swallowing pills.