Archducal :: Archducal (a.) Of or pertaining to an archduke or archduchy.
Ducal :: Ducal (a.) Of or pertaining to a duke.
Ducally :: Ducally (adv.) In the manner of a duke, or in a manner becoming the rank of a duke..
Oviducal :: Oviducal (a.) Of or pertaining to oviducts; as, oviducal glands..