(Internet slang) Synonym of Eternal September

plural of self-perpetuation

plural of perpetual curate

(historical) A resident parish priest or incumbent curate within the United Church of England and Ireland, supported by a cash stipend, usually maintained by an endowment fund, and having no ancient right to income from tithe or glebe.

plural of perpetual license

(accounting) A system of maintaining a business' inventory in which changes to the inventory are recorded in real time, so that the inventory is always accurate.

(law, singular only) The rule that prevents a testator or other transferor of property from controlling further transfer of his property more than twenty-one years after the death of anyone alive at the time of the original transfer who may have some interest in the transfer.

plural of rule against perpetuities

(physics, pseudoscience) A hypothetical device that exhibits perpetual motion, especially one that does useful work with no input of energy.

plural of perpetual motion machine