(military) A military reconnaissance mission performed with heavy combat units where hostile contact with the enemy is expected.

(mathematics) The problem of finding the "best" solution from all feasible solutions, given constraints defining which of the solutions are feasible, and a goal function defining which of the feasible solutions is the best one.

The problem of whether prescriptive statements—stating what the case ought to be—can be derived from descriptive statements—stating what the case is.

A period during which a new employee is monitored to assess his/her capability.

(finance) In investment banking, any deal or transaction with a high degree of likelihood of success.

plural of probabilistically checkable proof

Someone who studies probability, a particular branch of mathematics. / (theology, philosophy) A follower of probabilism.

plural of probabilist

plural of probability density function

Graph paper with vertical and horizontal rules, the latter spaced evenly and the former according to a scale that allows a plotted probability curve — usually that of a normal distribution — to appear linear.