Legal Definitions - in testimonium

• The document was signed by the witnesses in testimonium of the agreement.
• In testimonium of his loyalty, the soldier was awarded a medal.

These examples show how "in testimonium" is used to indicate that something is being done as evidence or witness to a particular event or agreement. In the first example, the witnesses sign the document in order to provide evidence of the agreement. In the second example, the soldier is given a medal as evidence of his loyalty.