NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,990 terms related to cancer and medicine.
- listen (NA-noh-MEE-ter)
- 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.