En réponse à John Cowan <cowan@...>:
>
> It's used in English too: queen-consort, prince-consort. The latter
> title
> isn't technically applied to Elizabeth II's husband Philip, who is
> simply Prince Philip, but it *was* applied to Victoria's husband Albert.
>
> The countervailing adjective is "regnant"; Elizabeth is a queen-regnant,
> though of course that is not her title either.
>
> Note the anomalous noun-adjective order.
>
I would say that they both come from French. "Régnant" can also be used (but
much less). It is the regular present participle of "régner": to reign.
Christophe.
http://rainbow.conlang.free.fr