Definition of "testimonium" [testimonium]

• The usual concluding clause of an instrument or legal document, beginning “In witness whereof” and followed by the signatures and seals of the party or parties. Also testimonium clause. (noun)

The Century Dictionary (Public Domain)

• "The BCA's libel case and the McTimoney letter mean that from now on ignorantia testimonium non excusat ignorance of the evidence is no excuse."
• "In cujus rei testimonium presenti Carte nostre sigillum nostrum precipimus apponi."
• "In testimonium autem nostre devotionis ergra locum predictum sic a nobis dilectum et electum concepte, presentem literam Religiosis predictis dimittimus, nostris successoribus in posterum ostendendam."