investīgātĭo, ōnis, f. [investigo],
a searching or inquiring into , investigation (class.): rerum occultissimarum, Cic. Fin. 5, 4, 10: veri (with inquisitio), id. Off. 1, 4, 13: sapientiae ejus, Vulg. Isa. 40, 28.
investīgātiō ōnis, f investigo, a searching into, investigation : rerum: veri. ...
An Elementary Latin Dictionary