tes·ti·mo·ni·um | \ˌtestəˈmōnēəm\
plural testimoniums\-ēəmz \ or testimonia\-ēə \

Definition of testimonium 

1 archaic : testimonial sense 2b

2 : the final or authenticating clause of an instrument that typically begins “In witness whereof” and furnishes such information as when it was signed and before what witnesses

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History and Etymology for testimonium

Latin, witness, evidence

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