Oriented back-to-back, as of two animals or objects.
[ad- + Latin dorsum, back + -ed, on the model of French adossé, back-to-back, from past participle of adosser, to lean against, place back-to-back, from Old French : a-, to, towards (from Latin ad-) + dos, back (from Latin dorsum).]
Christie's London's The Exceptional Sale offered the addorsed pair of marble lions made for the foot of the tomb of Charles V of France, carved by Andre Beauneveu around 1364-66.
The figure of Alexander is large in scale compared with many of the others, and shows him seated on a kind of stool anchored on the backs of two addorsed griffins.