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
Description: The kilogram is the base unit of mass in the International (SI) System of Units, and is accepted on a day-to-day basis as a unit of weight (the gravitational force acting on any given object). The kilogram is almost exactly equal to the mass of one litre of water.Definition: The kg is defined as being equal to the mass of the International Prototype of the Kilogram (IPK), a block of platinum-iridium alloy manufactured in 1889 and stored at the International Bureau of Weights and Measures in Sevres, SÃ¨vres. francehe kg is defined as being equal to the mass of the International Prototype of the Kilogram (IPK), a block of platinum-iridium alloy manufactured in 1889 and stored at the International Bureau of Weights and Measures in Sevres, SÃ¨vres. france