Pronunciation: (pûr"pi-tOO'i-tē, -tyOO'-),[key] —n., —pl.-ties. 1. the state or character of being perpetual (often prec. by in): to desire happiness in perpetuity. 2. endless or indefinitely long duration or existence; eternity.
3. something that is perpetual.
4. an annuity paid for life.
5. Law.an interest under which property is less than completely alienable for longer than the law allows.