What is Contingency Of A Process?

Legal Definition
In Scotch law. Where two or more processes are so connected that the circumstances of the one are likely to throw light on the others, the process first enrolled is considered as the leading process, and those subsequently brought into court, if not brought in the same division, may be remitted to it, ob contingentiam, on account of their nearness or proximity in character to it. The effect of remitting processes in this manner is merely to bring them before the same division of the court or same lord ordinary. In other respects they remain distinct. Bell.
-- Black's Law Dictionary