A Frankenword is a special kind of portmanteau we don't talk about all that much, but given Sandy (dubbed early on a "Frankenstorm"), it is again a topic of conversation, at least among certain semantically driven people. Frankenword even has a Wiktionary page, which means something!
A Frankenword is, essentially, a blending of the word Frankenstein and another word in portmanteau fashion, to create a new word with a blended meaning. A few Frankenwords: Frankenfood (first used in 1992 to mean "genetically engineered food"); Frankenfish (an ugly, possibly genetically modified fish); Frankenplant (like the fish, but a plant); Frankenweenie (this is a movie currently at theaters maybe near you, if you haven't been left powerless by Frankenstorm Sandy; it is about a Frankenstein-dog); and so on.
Geoffrey Pullum writes at Lingua Franca, "These words like Frankenstorm and Frankenweenie are themselves formed via the sort of unnatural combination of parts that the franken-part alludes to," something that makes them Frankenwords in both meaning and makeup. Another Frankenword he mentions: "Eddie Van Halen plays a garishly decorated guitar put together promiscuously out of cannibalized Fender Stratocaster body and neck parts, a Gibson pickup, and a Floyd Rose locking vibrato arm. It is known as the Frankenstrat." But Pullum points out that a word need not have Franken in it to be a Frankenword; helicopter and words that end with -gate tacked on (Climategate), for instance, are created through similar means, "crudely sewn together from ill-matched bits," he writes.