Collateral Consanguinity

That relationship which subsists between persons who have the same ancestors but not the same descendants, who do not descend one from the other.

2 Bl. Comm. 203.

Lineal consanguinity being usually represented by a perpendicular or right line, (Linea recta,) in which the kindred are ranked relatively, one above or below the other, as father, son, grandson, colinteral consanguinity is properly denoted by one or more transverse lines, crossing this, or proceeding obliquely froma it on the stde (a latere) upon which the kindred are ranked in their order.

Burrill.