Maturity(redirected from mat)
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n. 1) the date when the payment of the principal amount owed under the terms of a promissory note or bill of exchange becomes due. Quite often a note states that failure to pay interest or installment payments when due "accelerates" the note, making the "maturity date" immediate if such payments are demanded and not paid. 2) the age when one becomes an adult, which is 18 for most purposes. (See: promissory note, bill of exchange, acceleration, legal age)
MATURITY. The time when a bill or note becomes due. In order to bind the endorsers such note or bill must be protested, when not paid, on the last day of grace. See Days of grace.