Wiktionary
intertestamental
a. (context Christianity English) Pertaining to the period of time between the writing of Malachi and the wrtiting of the New Testament; roughly the last four centuries B.C.
Usage examples of "intertestamental".
As we discussed in the very beginning of our study, the kind of Pharisaism Jesus found so revolting developed during the latter part of the intertestamental silence.