noun The quality of being contingent, of happening by chance. .mw-parser-output .defdate{font-size:smaller}
noun A possibility; something which may or may not happen. A chance occurrence, especially in finance, unexpected expenses.
noun An amount of money which a party to a contract has to pay to the other party (usually the supplier of a major project to the client) if they do not fulfill the contract according to the specification.
noun A statement which is neither a tautology nor a contradiction.