nanometer

Definition / meaning of nanometer

A measure of length in the metric system. A nanometer is one billionth of a meter. An average human hair is about 60,000 nanometers thick. Nanometers are used to measure wavelengths of light and distances between atoms in molecules.

Listed under:

Find More About 'nanometer'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

Leave a Comment