Contingent
1. (a.) Possible, but not certain to occur; dependent on something as yet undetermined; as, plans contingent on good weather\; incidental; casual.
2. (a.) Dependent on that which is undetermined or unknown; as, the success of his undertaking is contingent upon events which he can not control.
3. (a.) Dependent for effect on something that may or may not occur; as, a contingent estate.
4. (n.) An event which may or may not happen; that which is unforeseen, undetermined, or dependent on something future; a contingency.
5. (n.) That which falls to one in a division or apportionment among a number; a suitable share; proportion; esp., a quota of troops.