Meaning

• An event which may or may not happen; that which is unforeseen, undetermined, or dependent on something future.

• That which falls to one in a division or apportionment among a number; a suitable share.

• A quota of troops.

Meaning

• Possible or liable, but not certain to occur.

• (with upon or on) Dependent on something that is undetermined or unknown.

  "The success of his undertaking is contingent upon events which he cannot control."

• Dependent on something that may or may not occur.

  "a contingent estate"

• Not logically necessarily true or false.

• Temporary.

  "contingent labor"