Conceptum
The Cyclopedic Law Dictionary · Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
The Cyclopedic Law Dictionary
In the civil law. A thaft (furtum) was called "conceptum" when the thing stolen was searched for, and found upon some person in the presence of witnesses.
Inst. 4. 1. 4.