Exponentiation is essentially a move to the power set—the set of all subsets of a given set. This is one of the reasons why Bertrand Russell's paradox is indeed a paradox: We cannot find a universal set because no set can contain its own power set!

An antero-posterior total-body radiograph (babygram) is most helpful. However, due to contractures or post mortem stiffening of the body, a postero-anterior babygram may be preferable to antero-posterior babygram.

Everyone dressed up for the graduation ball.

She stared at Master Mannix with no expression. Somehow, her blanked face did not even flinch.