Of or pertaining to matrimony or the estate of marriage. Matrimonial causes. In English ecclesiastical law. Causes of action or injuries respecting the rights of marriage. One of the three divisions of causes or injuries cognizable by the ecclesiastical courts, comprising suits for jactitation of marriage, and for restitution of conjugal rights, divorces, and suits for alimony. 3 Bl. Comm. 92 94; 3 Steph. Comm. 712 714. Matrimonial cohabitation. The living together of a man and woman ostensibly as husband and wife. Cox v. State, 117 Ala. 103, 23 South. 806, 41 L E. A. 760, 67 Am. St. Rep. 166; Wilcox v. Wilcox, 46 Hun (N. Y.) 37. Also the living together of those who are legally husband and wife, the term carrying with it, in this sense, an implication of mutual rights and duties as to sharing the same habitation. Forster v. Forster, 1 Hagg. Consist. 144; U. S. v. Cannon, 4 Utah, 122, 7 Pac. 369.