Trilemma
Trilemma , noun
[New Latin, from Greek {not transcribed} (see Tri-) + any thing received, in logic, an assumption. Compare Dilemma.]
1.
(Logic) A syllogism with three conditional propositions, the major premises of which are disjunctively affirmed in the minor. See Dilemma.
2.
A state of things in which it is difficult to determine which one of three courses to pursue.