Im·pos·si·bil·i·ty n.; pl. Impossibilities
1. The quality of being impossible; impracticability.
They confound difficulty with impossibility. --South.
2. An impossible thing; that which is not possible; that which can not be thought, done, or endured.
Impossibilities! O, no, there's none. --Cowley.
3. Inability; helplessness. [R.]
Logical impossibility, a condition or statement involving contradiction or absurdity; as, that a thing can be and not be at the same time. See Principle of Contradiction, under Contradiction.
n 1: incapability of existing or occurring [syn: impossibleness]
2: an alternative that is not available [syn: impossible