ju·rat 
(jrăt′)
(jrăt′)n.
A clause attached to an affidavit, in which a notary or legally authorized officer attests to the fact that the affidavit was made under oath.
[Middle English, informant under oath, member of a ruling body of a city, from Anglo-Norman, member of a ruling body of a city, from Medieval Latin iūrātus, juror, from past participle of Latin iūrāre, to swear; see JURY1.]