(colloquial, rhetorical question, mildly vulgar) A rhetorical question in response to a question to which the answer is an emphatic yes.

Provided for short-term use. / (manufacturing) Fit to substitute for some element in a complex system without changes to the existing infrastructure.

One who casually drops in (visits unannounced or without appointment). / An informal event that does not require booking in advance. / A place that can be visited casually, without an appointment.

(graph theory) the number of vertices in a maximum independent set of a given graph, often denoted as 𝛼=𝛼(G)

Tasks in progress; involvement in ongoing projects.

(games) A children's game in which two players keep an object away from a third player (who is in between them) by throwing it past that player.

plural of infraorder

(law) A dispute over a material fact upon which the outcome of a legal case may rely, and which therefore must be decided by a judge or jury; a dispute which precludes summary judgment.

(Of a logical fallacy) Deriving from the linguistic expression used; for reason of ambiguity, division, etc.

A theatre in the form of an arena, with seating on at least three of the four sides