assecuration

noun3

1. •
   (historical) A bill or charter outlining the rights granted and assured by Germanic Royalty in the late Middle Ages and early Renaissance.
2. •
   (no longer used) Assurance; certainty.

   • Fritz has given me assecuration that the said paranymphal occasion will occur as suggested, and not on the Greek calends. — 1906
3. •
   (no longer used) Protection; safeguard; insurance.

   • Association for the assecuration of the Queen , subscribed by the members of Lincoln's Inn ( Egerton Papers 208 ) . — 1875