n. the *SI unit of mass equal to 1000 grams and previously defined in terms of the international prototype kept at Sèvres, near Paris; from 20 May 2019 it is defined in terms of the Planck constant. Symbol: kg.... kilogram
n. one thousand *volts (symbol: kV). In radiography, the kilovoltage of the X-ray machine determines the maximum energy of the X-rays produced. The setting is important in controlling the exposure of the film and is generally higher when more penetration is required, depending on the thickness of the body part being imaged. See also milliamp.... kilovolt