nondestructive

non·de·struc·tive

N0137500 (nŏn′dĭ-strŭk′tĭv)adj. Of, relating to, or being a process that does not result in damage to the material under investigation or testing.
non′de·struc′tive·ly adv.

nondestructive

(ˌnɒndɪsˈtrʌktɪv) adj1. (General Engineering) engineering not capable of causing damage (to a structure or material)2. (Computer Science) computing not capable of erasing data