kilogram

noun2

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 h to be 6.626 070 15 × 10⁻³⁴ when expressed in units of kg⋅m²⋅s⁻¹. Symbol: kg

   • Friday’s vote has permanently redefined the kilogram and sent Le Grand K into retirement. — 2018
2. •
   (nonstandard) The unit of weight such that a one-kilogram mass is also a one-kilogram weight.

   • A nan (bread) costs 25 Afghanis : a kilogram of beef 800 Afghanis and mutton of the same weight for 1200 Afghanis; […] — 1990