from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An additional sample of a subpopulation, above and beyond the portion of a main sample that already belongs to that subpopulation.
- v. To sample additional members of a subpopulation, above and beyond the members included in the main sample.
- v. To sample a signal at a frequency well above its Nyquist rate.
over- + sample (Wiktionary)