"Maturity": 1. In relation to a financial instrument evidencing a debt obligation, the remaining time until the principal is repayable to the holder. 2. The remaining life of a derivative instrument, during which its value may continue to change. 3. Pensions. In relation to a Defined Benefit pension scheme, the ratio of the accrued liabilities relating to the deferred and actual pensioners to those relating to the active members. 4. Loosely, the same as any of: average effective maturity, average maturity, average nominal maturity or duration.