(astronomy) A near-Earth asteroid or comet with an orbit such that it has the potential to make close approaches to the Earth and is of a size large enough to cause significant regional damage in the event of impact.

plural of object pool pattern

(programming) A creational design pattern that uses a set of initialised objects kept ready to use, rather than allocating and destroying them on demand.

(software engineering) A piece of middleware in distributed software that enables program calls from one computer to another via a network.

(object-oriented programming) An object that mimics the behavior of a real object in a controlled way, often used as part of unit testing.

(software) A design pattern used to transfer data between software application subsystems.

plural of obesity hypoventilation syndrome

(medicine) A condition in which a severely overweight person fails to breathe rapidly or deeply enough, resulting in low blood oxygen levels and high blood carbon dioxide levels.

(law) A bond in which the obligor, in consideration of having received a certain sum of money, binds himself to pay a larger sum, on unusual interest, on the death of some specified individual from whom he has expectations.

An instrument of the oboe family, pitched in A below middle C.