Definify.com

Webster 1913 Edition

Noun.

[NL., fr. Gr. [GREEK] (see

) +

any thing received, in logic, an assumption. Cf.

(Logic)

A syllogism with three conditional propositions, the major premises of which are disjunctively affirmed in the minor. See

A state of things in which it is difficult to determine which one of three courses to pursue.

trilemma ‎(plural trilemmas)

A circumstance in which a choice must be made between three options that seem equally undesirable.
(logic) An argument containing three alternatives, jointly exhaustive either under any condition(s) or under all condition(s) consistent with the universe of discourse of that argument, that each imply the same conclusion.

circumstance