orthodontics: dental specialty that using braces, retainers, and other dental devices to treat misalignment of teeth, restoring them to proper functioning. orthodontist: the oral health provider who specializes in diagnosis, prevention, interception, and treatment of malocclusions, or bad bites, of the teeth and surrounding structures.
Define metric system: a decimal system of weights and measures based on the meter and on the kilogram a decimal system of weights and measures based on the meter and on the kilogramâ¦ See the full definition
âºâº Definition: Kilogram. The kilogram or kilogramme, (symbol: kg) is the SI base unit of mass. A gram is defined as one thousandth of a kilogram. Conversion of units describes equivalent units of mass in other systems.