kilogram
"Kilogram" is a straightforward word with essentially one core meaning — it is a unit of measurement. You will encounter it constantly in everyday life, from grocery shopping to science class.
A kilogram is the basic unit used to measure how heavy something is in the metric system. Think of it this way: one kilogram is roughly the weight of a small water bottle (1 litre of water). When you buy fruit at a market or check your body weight, kilograms are the unit most of the world uses. It is often shortened to 'kg' in writing.
everyday language, science, commerce · Modern, widely used