Definition of: morganatic

(môr′gə·nat′ik) adjective
Designating a legitimate marriage between a male member of certain royal families of Europe and a woman of inferior rank, in which the titles and estates of the husband are not shared by the wife or their children. Also mor′ga·nat′i·cal. [<NL morganaticus <LL (matrimonium ad) morganaticum (wedding with) morning gift <OHG morgengeba morning gift (in lieu of a share in the estate)]
—mor′ga·nat′i·cal·ly adverb