Which unit of measure corresponds to 10^-3?

The correct answer is milli-. This prefix is used in the metric system to denote a factor of one-thousandth, which is represented mathematically as 10^-3. This means that one milli- unit is equal to one-thousandth of a base unit. For example, one millimeter (mm) is 0.001 meters, and one milligram (mg) is 0.001 grams.

Understanding these prefixes is crucial for working in fields like medical technology, as they help in accurate measurements and calculations of substances or quantities. Each prefix in the metric system denotes a specific factor and is widely used in scientific and medical contexts for ease of communication.