Kilo

kilo– is “a prefix denoting 1,000 times.”. It is used in the International System of Units (SI) to denote a multiple of a unit of measurement. For example, a kilometer is 1,000 meters, and a kilogram is 1,000 grams.

The prefix kilo– comes from the Greek word χίλιοι (chilioi), meaning “thousand.” It was first used in the French metric system in the late 18th century.