Either an associate government or non-government entity or agency that supplements the works of a larger organization or agency by helping to carry out institutional arrangements in line with the larger organization's goals and objectives.

A country that another country does business with, usually on a regular basis.

(idiomatic, slang) To engage in unrestrained merriment.

plural of partial autocorrelation

Remaining correlation of two random variables in a stochastic process after intervening random variables have been accounted for.

plural of partial-birth abortion

A state in which power is held by a single political party.

A thorough cleaning of a military barracks by its inhabitants.

Alternative spelling of GI party

(idiomatic) Synonym of life of the party