Dictionary
mor•ga•nat•ic
Pronunciation: (môr"gu-nat'ik), [key]—
adj.
of or pertaining to a form of marriage in which a person of high rank, as a member of the nobility, marries someone of lower station with the stipulation that neither the low-ranking spouse nor their children, if any, will have any claim to the titles or entailed property of the high-ranking partner.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.