(mathematics, rare) A total order.

plural of higher-order function

(computer science) A function that takes one or more functions as an input, and returns a function as a result.

Alternative spelling of stop loss order

(logic) A formal deductive system extended from propositional logic with the possibility to quantify over individuals of the domain of discourse.

A legally binding directive—issued by a court of law, legislature, or other authority—that requires workers who are engaging in a strike or similar labor action to return to work.

(set theory) A set having a specified total order.

(Catholicism) The religious order of friars established by St Francis of Assisi.

plural of ℝ-order tree

(topology) An order tree whose segments are homeomorphic to segments of the real line and that is the union of countably many segments.