\Mat`ri*mo"ni*al\, a. [L. matrimonialis: cf. F.
matrimonial. See {Matrimony}.]
Of or pertaining to marriage; derived from marriage;
connubial; nuptial; hymeneal; as, matrimonial rights or
duties.

      If he relied upon that title, he could be but a king at
      courtesy, and have rather a matrimonial than a regal
      power.                                   --Bacon.

Syn: Connubial; conjugal; sponsal; spousal; nuptial;
     hymeneal.