oversample verb 2noun 1forms 3 verb2 •To sample additional members of a subpopulation, above and beyond the members included in the main sample. •To sample a signal at a frequency well above its Nyquist rate. noun1 •An additional sample of a subpopulation, above and beyond the portion of a main sample that already belongs to that subpopulation. formsoversampled · oversampling · oversamples