In English law. One whose right of inheritance is indefeasible, provided he outlive the ancestor. 2 Bl. Comm. 208. In Scotch law. He is the person to whom the succession has actually opened. He is so called until his regular entry on the lands by service or infeftment on a precept of clare constat. Apparent maturity. The apparent maturity of a negotiable instrument payable at a particular time is the day on which, by its terms, it becomes due. or, when that is a holiday, the next business day. Civil Code Cal.