indagatio: investigatio (the tracing out): spectatio: cognitio (the examination, trial, etc.). The investigation of truth, investigatio veri: veri inquisitio atque investigatio (where inquisitio means the examination, in each case, of what is true; investigatio, the pursuing the often obscure traces of truth, Cic., Off., 1, 4, 13): cognitio veri (the sifting of the truth). To give one’s self entirely up to the investigation of anything, totum se in aliqua re exquirenda collocare.