NCI Dictionary of Genetics Terms
The NCI Dictionary of Genetics Terms contains technical definitions for more than 200 terms related to genetics. These definitions were developed by the PDQ® Cancer Genetics Editorial Board to support the evidence-based, peer-reviewed PDQ cancer genetics information summaries.
- listen (POY-kih-loh-DER-muh)
- Irregular patterns of reddish brown pigmentation of the skin associated with sun exposure, aging, or a genetic cause.