Webster 1913 Edition
imp. & p. p.
p. pr. & vb. n.
investigatus, p. p. of
investigareto investigate; pref.
vestigareto track, trace. See
To follow up step by step by patient inquiry or observation; to trace or track mentally; to search into; to inquire and examine into with care and accuracy; to find out by careful inquisition;
investigatethe causes of natural phenomena
To pursue a course of investigation and study; to make investigation.
Webster 1828 Edition
To search into; to inquire and examine into with care and accuracy; to find out by careful disquisition; as, to investigate the powers and forces of nature; to investigate the causes of natural phenomena; to investigate the principles of moral duty; to investigate the conduct of an agent or the motives of a prince.