testimonium

noun

tes·​ti·​mo·​ni·​um

ˌtestəˈmōnēəm

plural testimoniums

-ēəmz

or testimonia

-ēə

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

Word History

Etymology

Latin, witness, evidence

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