Dirationare
A New Law Dictionary and Glossary · Alexander M. Burrill · 1850
A New Law Dictionary and Glossary
Derationare, Disrationare. L. Lat. [from di, or dis, contrary, and ratiocinari, to prove.] In old English law. To deraign; to prove. Dirationabit se proximus haeres propinquior; the next heir shall prove his right. Glanv. lib.
2, c. 6.
Et parati sunt hoc dirationare; and this they are ready to deraign or prove. Id. lib.
4, c. 6.
Id. lib.
2, c. 20.
To disprove; to prove the contrary, or refute an adversary's allegation, (assertionem contrariam refellere.) Spelman considers this to be the proper meaning, though the word seems to occur rarely in this sense. See Disrationare, Deraign.