trilema

Etymology
From, by changing the prefix for.

Noun

 * 1) trilemma, a circumstance in which a choice must be made between three options
 * 2)  trilemma, an argument containing three alternatives
 * 1)  trilemma, an argument containing three alternatives

Usage notes
Akademický slovník cizích slov (1995) states that the genitive of trilema ends with -y, which suggests that the word is feminine, but in practical usage the neuter declension is used (with genitive ), following the declension of the closely related term.

Noun

 * 1) trilemma