Daleuprowe

A "daliuprowe" is what some would call a partially-inverted, hemispherically-redacted palindrome. These rare words are used in mystery novels to provide the protagonist with a barrier to moving forward in the plot. First discovered by the renowned haikuist Regina Moon Sherman, their use has propagated with the invention of the Internet.

For example, daliuprowe is a "daliuprowe" for palindrome because, when inverted, the "p" becomes a "d", the "a", "l", and "i" stay the same, the "n" becomes a "u", et cetera.