(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.

(Internet slang) Synonym of Eternal September

(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.

(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

Causing itself to continue to exist.

An act or state of something causing itself to continue to exist.

plural of self-perpetuation

Contentment is more a matter of attitude than circumstances.

(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.