(plural dilemmas or dilemmata)
- A circumstance in which a choice must be made between two or more alternatives that seem equally undesirable.
- (loosely) A difficult circumstance or problem.
- (logic) A type of syllogism of the form "if A is true then B is true; if C is true then D is true; either A or C is true; therefore either B or D is true".
- (rhetoric) Offering to an opponent a choice between two (equally unfavorable) alternatives.
First attested 1523, from Late Latin dilemma, from Ancient Greek δίλημμα (dilēmma, “ambiguous proposition”), from δι- (di-) + λῆμμα (lēmma, “premise, proposition”).