1. oversample - Noun
2. oversample - Verb
oversample (plural oversamples)
(statistics) An additional sample of a subpopulation, above and beyond the portion of a main sample that already belongs to that subpopulation.
(statistics) To sample additional members of a subpopulation, above and beyond the members included in the main sample.
(systems) To sample a signal at a frequency well above its Nyquist rate.
Source: en.wiktionary.org