What is the metric unit of linear measure equal to 1/1000 of a meter?

The metric unit of linear measure that is equal to 1/1000 of a meter is the millimeter. In the metric system, different units of measure are based on powers of ten, which makes conversions straightforward.

A millimeter is one of the smallest units used for measuring length, and it is specifically defined as being 1/1000 of a meter. To visualize this, you can think of a meter being divided into one thousand equal parts—each part represents one millimeter. This small unit is commonly used in various fields, especially when precision is required in measurements like those in engineering, science, and medicine.

In comparison, a centimeter, which is also a metric unit, equals 1/100 of a meter. The meter is the base unit of length in the metric system, and a kilometer represents 1000 meters. Understanding these relationships helps to clarify why millimeter is the correct choice for this question.