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Määritelmät

Substantiivi

1. In the International System of Units, the base unit of mass; conceived of as the mass of one litre of water, but now defined by taking the fixed numerical value of the Planck constant to be 6.626 070 15 × 10⁻³⁴ when expressed in units of kg⋅m²⋅s⁻¹. Symbol: kg
2. (proscribed) The unit of weight such that a one-kilogram mass is also a one-kilogram weight.