Trī-lĕm'mȧ, n.

n. [Gr. τρι, τρίς, three, thrice, and λῆμμα, any thing received, in logic, an assumption, from λαμβάνειν, to take.] 1. (Logic.) A syllogism with three conditional propositions, the major premises of which are disjunctively affirmed in the minor. See DILEMMA.