(military) A petroleum product (generally a lubricant, oil, grease, or specialty item) normally packaged by a manufacturer and procured, stored, transported, and issued in containers having a fill capacity of 55 United States gallons (or 45 imperial gallons, or 205 liters) or less.

plural of primary offense

plural of primary school

(logic) The indirect verification or falsification of a statement by the verification or falsification of each of the finite number of cases which arise therefrom.

Being mentioned in the media, even in the context of a scandal or controversy, is beneficial to the subject because it brings publicity.

A group of news organizations pooling their resources in the collection of news. A video pool or pool feed is then distributed to members of the pool, who are free to edit it or use it as they see fit.

plural of prayer book

(mathematics) The property of there being a unique morphism from an arbitrary object to the universal morphism of a comma category which is from a functor to a fixed object; or, dually, the property of there being a unique morphism from the universal morphism to an arbitrary object of a comma category which is from a fixed object to a functor. (Caveat: the uniqueness is up to isomorphism.)

(set theory) The set of all possible tuples whose elements are elements of given, separately specified, sets.

(Britain) The hierarchy of owned housing.