Adlegation
Adlegation ({not transcribed}) , noun
[Latin adlegatio, allegatio, a sending away; from adlegare, allegare, to send away with a commission; ad in addition + legare to send as ambassador. Compare Allegation.]
A right formerly claimed by the states of the German Empire of joining their own ministers with those of the emperor in public treaties and negotiations to the common interest of the empire. — Encyc. Brit