cross-validation

[ kraws-val-i-dey-shuh n, kros- ]
/ ˈkrɔsˌvæl ɪˈdeɪ ʃən, ˈkrɒs- /

noun Statistics.

a process by which a method that works for one sample of a population is checked for validity by applying the method to another sample from the same population.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019